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Crash of an Airbus A320-232 in the Mediterranean Sea: 66 killed

Date & Time: May 19, 2016 at 0229 LT
Type of aircraft:
Operator:
Registration:
SU-GCC
Flight Phase:
Survivors:
No
Schedule:
Paris – Cairo
MSN:
2088
YOM:
2003
Flight number:
MS804
Country:
Region:
Crew on board:
10
Crew fatalities:
Pax on board:
56
Pax fatalities:
Other fatalities:
Total fatalities:
66
Captain / Total flying hours:
6275
Captain / Total hours on type:
2101.00
Copilot / Total flying hours:
2675
Aircraft flight hours:
48000
Circumstances:
The aircraft departed Paris-Roissy-Charles de Gaulle Airport at 2321LT on May 18 on an international schedule flight to Cairo. carrying 56 passengers and 10 crew members. The crew maintained radio contacts with the Greek ATC and was transferred to the Egyptian ATC but failed to respond. Two minutes after the airplane left the Greek Airspace, the aircraft descended from FL370 to FL220 in few seconds, apparently making a first turn to the left and then a 360 turn to the right before disappearing from the radar screen at 0229LT while at an altitude of 10'000 feet. It is believed that the aircraft crashed in the Mediterranean sea about 200 km north of Egyptian coast. The crew did not send any mayday message, thereby all assumptions remains open. It appears that some various debris such as luggage were found on May 20 about 290-300 km north of Alexandria. Two days after the accident, it is confirmed that ACARS messages reported smoke on board, apparently in the lavatory and also in a technical compartment located under the cockpit area. Above that, several technical issues were reported by the ACARS system. The CVR has been recovered on June 16, 2016, and the DFDR a day later. As both recorder systems are badly damaged, they will need to be repaired before analyzing any datas. On December 15, 2016, investigators reported that traces of explosives were found on several victims. Egyptian Authorities determined that there had been a malicious act. The formal investigation per ICAO Annex 13 was stopped and further investigation fell within the sole jurisdiction of the judicial authorities. Contradicting the Egyptian finding, the French BEA considered that the most likely hypothesis was that a fire broke out in the cockpit while the aircraft was flying at its cruise altitude and that the fire spread rapidly resulting in the loss of control of the aircraft.
Probable cause:
It was determined that the accident was the consequence of an in-flight fire in the cockpit but investigations were unable to establish the exact origin of the fire. Following the fire that probably resulted from an oxygen leak from the copilot's quick-fit mask system, both pilots left the cockpit in a hurry and were apparently unable to find and use the fire extinguisher. To this determining element, three possible contributory factors have been identified: a blanket charged with static electricity requested by the captain to sleep; fatty substances being part of the meal served to the pilots, and a high probability of a lit cigarette or a cigarette butt burning in an ashtray while the crew smoked regularly in the cockpit. The experts also noted unprofessional behavior by the flight crew who listened to music, made multiple comings and goings in the cockpit as well as a lack of attention about flight monitoring procedures.

Crash of an Airbus A300B4-203F in Afgooye

Date & Time: Oct 12, 2015 at 1930 LT
Type of aircraft:
Operator:
Registration:
SU-BMZ
Flight Type:
Survivors:
Yes
Schedule:
Oostend – Cairo – Mogadishu
MSN:
129
YOM:
1980
Flight number:
TSY810
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was performing a cargo flight from Ostend to Mogadishu with an intermediate stop in Cairo with perishable goods on board on behalf of the AMISOM, the African Mission in Somalia. The final approach to Mogadishu-Aden Abdulle International Airport was performed by night. As the crew was unable to localize the runway, he abandoned the approach and initiated a go-around procedure. A second attempt was also interrupted and the crew initiated a new go-around then continued towards the north of the capital city. Eventually, the captain decided to attempt an emergency belly landing near Afgooye, about 25 km northwest of Mogadishu. Upon landing, the aircraft lost its both engines and came to rest in the bush. Two crew members were taken to hospital while four others were uninjured. The aircraft was damaged beyond repair. According to Somalian Authorities, the International Airport of Mogadishu is open to traffic from 0600LT till 1800LT. For undetermined reason, the crew started the descent while the airport was already closed to all traffic (sunset at 1747LT). Also, an emergency landing was unavoidable, probably due to a fuel exhaustion. It is unknown why the crew did not divert to the alternate airport.
Probable cause:
When the controller received the estimated time of arrival for TSY810 from the Flight Information Center (FIC) Nairobi he advised FIC Nairobi (Kenya) that Mogadishu Airport was closed at the estimated time of arrival and advised the crew should divert to their alternate aerodrome but received no feedback. At 14:45Z the tower received first communication from the crew advising they would be overhead the aerodrome at 15:02Z, the controller advised again that the aerodrome would already be closed by then, the crew insisted however that they would land. Tower provided the necessary landing information like weather and active runway. At 15:02Z there was no sight of the aircraft, tower queried with the crew who reported still being 54nm out and revised their estimated time of arrival. At 15:27Z the aircraft turned final for runway 05, tower advised the crew to land at own discretion as tower's "instructions were only advisory and not clearance". The controller added that the approach was aborted and all subsequent approaches were unsuccessful too. "At one point the pilot mistook street parallel to the runway lighted by flood lights with intention of landing but was alerted the runway was on his right and the approach was discontinued. The crew has been warned numerous times that Mogadishu Airport closed at 1800LT (1500Z) and there is no adequate runway lights as the airport is not prepared to receive flights during night time hours. Thus, the pilot has intentionally tried to land at the airport while the visibility was limited to few metres due to darkness.
Final Report:

Ground fire of a Boeing 777-266ER in Cairo

Date & Time: Jul 29, 2011 at 0911 LT
Type of aircraft:
Operator:
Registration:
SU-GBP
Flight Phase:
Survivors:
Yes
Schedule:
Cairo - Jeddah
MSN:
28423/71
YOM:
1997
Flight number:
MS667
Country:
Region:
Crew on board:
10
Crew fatalities:
Pax on board:
307
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
16982
Captain / Total hours on type:
5314.00
Copilot / Total flying hours:
2247
Copilot / Total hours on type:
198
Aircraft flight hours:
48281
Aircraft flight cycles:
11448
Circumstances:
On July 29, 2011, the said Boeing 777-200, Egyptian registration SU-GBP, operated by EgyptAir, arrived from Madina, Saudi Arabia (Flight No 678) and stopped at Gate F7, terminal 3, Cairo international airport almost at 0500 UTC time. Necessary maintenance actions (After Landing Check ALC, Transit Check) have been performed by EgyptAir engineers and technicians, to prepare the aircraft for the following scheduled flight (Cairo/Jeddah, scheduled at 0730 UTC, same day 29 July 2011, flight number 667). The cockpit crew (Captain and F/O) for the event flight (Cairo/Jeddah), started the cockpit preparation including checking the cockpit crew oxygen system as per normal procedures. The F/O reported that the oxygen pressure was within normal range (730 psi). At almost 0711 UTC, and while waiting for the last passengers to board the aircraft, the F/O officer reported that a pop, hissing sound originating from the right side of his seat was heard, associated with fire and smoke coming from the right side console area below F/O window #3 (right hand lower portion of the cockpit area) [The aircraft was still preparing for departure at Gate F7, Terminal 3 at Cairo Airport at the time the crew detected the fire]. The Captain requested the F/O to leave the cockpit immediately and notify for cockpit fire. The captain used the cockpit fire extinguisher bottle located behind his seat in attempt to fight and extinguish the fire. The attempt was unsuccessful, the fire continued in the cockpit. The F/O left the cockpit, he asked the cabin crew to deplane all the passengers and crew from the aircraft, based on captain’s order. He moved to the stairs and then underneath the aircraft in attempt to find anyone with a radio unit but he could not. He returned to the service road in front of the aircraft and stopped one car and asked the person in the car to notify the fire department that the aircraft is burning on the stand F7 using his radio unit. The cabin crew deplaned the passengers using the two doors 1L and 2L. The passenger bridge was still connected to the entry doors that were used for deplaning. The first fire brigade arrived to the aircraft after three minutes. The fire was extinguished. Extinguishing actions and cooling of the aircraft were terminated at 0845 UTC (1045 Cairo local time). The aircraft experienced major damage resulting from the fire and smoke. Passengers deplaned safely, some (passengers, employees) suffered mild asphyxia caused by smoke inhalation. Passengers and crew were as follows: Passengers 307, Cockpit Crew 2, Cabin Crew 8.
Probable cause:
Probable causes for the accident can be reached through:
- Accurate and thorough reviewing of the factual information and the analysis sections
- Excluding the irrelevant probable causes included in the analysis section
Examination of the aircraft revealed that the fire originated near the first officer's oxygen mask supply tubing, which is located underneath the side console below the no. 3 right hand flight deck window. Oxygen from the flight crew oxygen system is suspected to have contributed to the fire's intensity and speed.
The cause of the fire could not be conclusively determined. It is not yet known whether the oxygen system breach occurred first, providing a flammable environment or whether the oxygen system breach occurred as a result of the fire.
Accident could be related to the following probable causes:
1. Electrical fault or short circuit resulted in electrical heating of flexible hoses in the flight crew oxygen system. (Electrical Short Circuits; contact between aircraft wiring and oxygen system components may be possible if multiple wire clamps are missing or fractured or if wires are incorrectly installed).
2. Exposure to Electrical Current
Final Report:

Ground accident of a Boeing 747-306M in Cairo

Date & Time: Jul 17, 2010 at 0730 LT
Type of aircraft:
Operator:
Registration:
HS-VAC
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Cairo - Jeddah
MSN:
23056/587
YOM:
1983
Flight number:
SV9302
Country:
Region:
Crew on board:
22
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a positioning flight from Cairo to Jeddah. During the takeoff roll, the engine n°4 experienced an uncontained failure. The takeoff procedure was rejected and the aircraft came to a halt and later transferred to a hangar. All 22 crew members escaped uninjured while the aircraft was considered as damaged beyond repair.
Probable cause:
Failure of the n°4 engine during takeoff following the failure of the high pressure compressor.

Crash of a Beechcraft C90B King Air in Port Said: 2 killed

Date & Time: Jan 15, 2008 at 1320 LT
Type of aircraft:
Registration:
SU-ZAA
Flight Type:
Survivors:
No
Schedule:
Cairo - Port Said
MSN:
LJ-1353
YOM:
1994
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
The crew departed Cairo-Intl Airport in the morning on a training flight to Port Said. Following four successful touch-and-go manoeuvres, the crew completed a 5th circuit. On approach, the aircraft apparently caught fire (engine explosion?), lost height and crashed in an open field, bursting into flames. Both pilots were killed.

Crash of a Boeing 707-366C in Cairo

Date & Time: Apr 2, 2004 at 0500 LT
Type of aircraft:
Operator:
Registration:
SU-AVZ
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Cairo - Ostend
MSN:
20762
YOM:
1973
Flight number:
MHS200
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
During a night takeoff from Cairo-Intl Airport runway 23L, the right main gear collapsed. The aircraft went out of control, veered off runway to the right and came to rest few hundred metres further with both right engines n°3 & 4 torn off. All seven occupants escaped uninjured.

Crash of a Boeing 737-3Q8 off Sharm el-Sheikh: 148 killed

Date & Time: Jan 3, 2004 at 0445 LT
Type of aircraft:
Operator:
Registration:
SU-ZCF
Flight Phase:
Survivors:
No
Schedule:
Sharm el-Sheikh - Cairo - Paris
MSN:
26283
YOM:
1992
Flight number:
FSH604
Country:
Region:
Crew on board:
13
Crew fatalities:
Pax on board:
135
Pax fatalities:
Other fatalities:
Total fatalities:
148
Captain / Total flying hours:
7443
Captain / Total hours on type:
474.00
Copilot / Total flying hours:
788
Copilot / Total hours on type:
242
Aircraft flight hours:
25603
Aircraft flight cycles:
17976
Circumstances:
Following a night takeoff from runway 22R at Sharm el Sheikh-Ophira Airport, the plane climbed and maneuvered for a procedural left turn to intercept the 306 radial from the Sharm el Sheikh VOR station. When the autopilot was engaged the captain made an exclamation and the autopilot was immediately switched off again. The captain then requested Heading Select to be engaged. The plane then began to bank to the right. The copilot then warned the captain a few times about the fact that the bank angle was increasing. At a bank angle of 40° to the right the captain stated "OK come out". The ailerons returned briefly to neutral before additional aileron movements commanded an increase in the right bank. The aircraft had reached a maximum altitude of 5,460 feet with a 50° bank when the copilot stated 'overbank'. Repeating himself as the bank angle kept increasing. The maximum bank angle recorded was 111° right. Pitch attitude at that time was 43° nose down and altitude was 3,470 feet. The observer on the flight deck, a trainee copilot, called 'retard power, retard power, retard power'. Both throttles were moved to idle and the airplane gently seemed to recover from the nose-down, right bank attitude. Speed however increased, causing an overspeed warning. At 04:45 the airplane struck the surface of the water in a 24° right bank, 24° nose-down, at a speed of 416 kts and with a 3,9 G load. The aircraft disintegrated on impact and debris sank by a depth of 900 metres. All 148 occupants were killed, among them 133 French citizens, one Moroccan, one Japanese and 13 Egyptian (all crew members, among them six who should disembark at Cairo). Weather at the time of accident was good with excellent visibility, outside temperature of 17° C and light wind. On January 17, the FDR was found at a depth of 1,020 metres and the CVR was found a day later at a depth of 1,050 metres.
Probable cause:
No conclusive evidence could be found from the findings gathered through this investigation to determine the probable cause. However, based on the work done, it could be concluded that any combination of these findings could have caused or contributed to the accident. Although the crew at the last stage of this accident attempted to correctly recover, the gravity upset condition with regards to attitude, altitude and speed made this attempt insufficient to achieve a successful recovery.
Possible causes:
- Trim/Feel Unit Fault (Aileron Trim Runaway),
- Temporarily, Spoiler wing cable jam (Spoiler offset of the neutral position),
- Temporarily, F/O wheel jam (Spoilers offset of the neutral position),
- Autopilot Actuator Hardover Fault.
Possible contributing factors:
- A distraction developing to Spatial Disorientation (SD) until the time the F/O announced 'A/C turning right' with acknowledgment of the captain,
- Technical log copies were kept on board with no copy left at departure station,
- Operator write up of defects was not accurately performed and resulting in unclear knowledge of actual technical status,
- There are conflicting signals which make unclear whether the captain remained in SD or was the crew unable to perceive the cause that was creating an upset condition until the time when the F/O announced that there was no A/P in action,
- After the time then the F/O announced 'no A/P commander' the crew behavior suggests the recovery attempt was consistent with expected crew reaction, evidences show that the corrective action was initiated in full, however the gravity of the upset condition with regards to attitude, altitude and speed made this attempt insufficient to achieve a successful recovery.
Additional findings:
- The ECAA authorization for RAM B737 simulator was issued at a date later than the date of training for the accident crew although the inspection and acceptance test were carried out at an earlier date.
- Several recorded FDR parameters were unreliable and could not be used for the investigation.
Final Report:

Crash of a Boeing 737-566 in Tunis: 14 killed

Date & Time: May 7, 2002 at 1518 LT
Type of aircraft:
Operator:
Registration:
SU-GBI
Survivors:
Yes
Schedule:
Cairo - Tunis
MSN:
25307
YOM:
1991
Flight number:
MS843
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
55
Pax fatalities:
Other fatalities:
Total fatalities:
14
Captain / Total flying hours:
4509
Captain / Total hours on type:
1549.00
Copilot / Total flying hours:
880
Copilot / Total hours on type:
639
Aircraft flight hours:
26082
Aircraft flight cycles:
15686
Circumstances:
The aircraft departed Cairo-Intl Airport at 1140LT on a regular schedule flight to Tunis-Carthage Airport with 56 passengers and six crew members on board. It entered the Tunis FIR at 1450LT, under control of the Tunis Regional CCR. After being transferred to the approach control at 1500LT, the crew was cleared for a VOR/DME approach to runway 11. On approach at 3,000 feet, the crew was informed he was number one for landing. The crew informed ATC that he departed 3,000 feet for 2,100 feet at 12 NM and wa later cleared to land. Wind was from 130 at 30 knots. At 1516LT, on final, the crew was transferred from the approach control to the tower and received a second clearance to land. In limited visibility, the aircraft struck a fence located on the top of a mountain and crashed in hilly terrain 6,6 km from the runway 11 threshold. Three crew members and 11 passengers were killed while 48 other people were injured. On board were 33 Egyptians including the six crew members, 16 Tunisians, three Algerians, three Jordans, two Chinese, two British, one Libyan, one Saudi and one Palestinian.
Probable cause:
The accident was due to the crew's failure to perform and control the final approach. This was materialized by the failure to respect the approach fix associated with the decision to start the final approach prematurely.
The following contributing factors were identified:
- The poor weather conditions that prevailed at the time of the accident, particularly the limited visibility,
- The shortcomings noted in the training of both pilots, particularly those relating to conventional VOR/DME approaches,
- The relative weakness of the flight experience of both crew members on the type of aircraft operated.
Final Report:

Crash of an Airbus A320-212 off Bahrain: 143 killed

Date & Time: Aug 23, 2000 at 1930 LT
Type of aircraft:
Operator:
Registration:
A4O-EK
Survivors:
No
Schedule:
Cairo - Bahrain - Muscat
MSN:
481
YOM:
1994
Flight number:
GF072
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
135
Pax fatalities:
Other fatalities:
Total fatalities:
143
Captain / Total flying hours:
4416
Captain / Total hours on type:
1083.00
Copilot / Total flying hours:
608
Copilot / Total hours on type:
408
Aircraft flight hours:
17370
Aircraft flight cycles:
13990
Circumstances:
On 23 August 2000, at about 1930 local time, Gulf Air flight GF072, an Airbus A320-212, a Sultanate of Oman registered aircraft A4O-EK, crashed at sea at about 3 miles north-east of Bahrain International Airport. GF072 departed from Cairo International Airport, Egypt, with two pilots, six cabin crew and 135 passengers on board for Bahrain International Airport, Muharraq, Kingdom of Bahrain. GF072 was operating a regularly scheduled international passenger service flight under the Convention on International Civil Aviation and the provisions of the Sultanate of Oman Civil Aviation Regulations Part 121 and was on an instrument flight rules (IFR) flight plan. GF072 was cleared for a VOR/DME approach for Runway 12 at Bahrain. At about one nautical mile from the touch down and at an altitude of about 600 feet, the flight crew requested for a left hand orbit, which was approved by the air traffic control (ATC). Having flown the orbit beyond the extended centreline on a south-westerly heading, the captain decided to go-around. Observing the manoeuvre, the ATC offered the radar vectors, which the flight crew accepted. GF072 initiated a go-around, applied take-off/go-around thrust, and crossed the runway on a north-easterly heading with a shallow climb to about 1000 feet. As the aircraft rapidly accelerated, the master warning sounded for flap over-speed. A perceptual study, carried out as part of the investigation, indicated that during the go-around the flight crew probably experienced a form of spatial disorientation, which could have caused the captain to falsely perceive that the aircraft was ‘pitching up’. He responded by making a ‘nose-down’ input, and, as a result, the aircraft commenced to descend. The ground proximity warning system (GPWS) voice alarm sounded: “whoop, whoop pull-up …”. The GPWS warning was repeated every second for nine seconds, until the aircraft impacted the shallow sea. The aircraft was destroyed by impact forces, and all 143 persons on board were killed.
Probable cause:
The factors contributing to the above accident were identified as a combination of the individual and systemic issues. Any one of these factors, by itself, was insufficient to cause a breakdown of the safety system. Such factors may often remain undetected within a system for a considerable period of time. When these latent conditions combine with local events and environmental circumstances, such as individual factors contributed by “frontline” operators (e.g.: pilots or air traffic controllers) or environmental factors (e.g.: extreme weather conditions), a system failure, such as an accident, may occur.
The investigation showed that no single factor was responsible for the accident to GF072. The accident was the result of a fatal combination of many contributory factors, both at the individual and systemic levels. All of these factors must be addressed to prevent such an accident happening again.
(1) The individual factors particularly during the approach and final phases of the flight were:
(a) The captain did not adhere to a number of SOPs; such as: significantly higher than standard aircraft speeds during the descent and the first approach; not stabilising the approach on the correct approach path; performing an orbit, a non-standard manoeuvre, close to the runway at low altitude; not performing the correct go-around procedure; etc.
(b) In spite of a number of deviations from the standard flight parameters and profile, the first officer (PNF) did not call them out, or draw the attention of the captain to them, as required by SOP’s.
(c) A perceptual study indicated that during the go-around after the orbit, it appears that the flight crew experienced spatial disorientation, which could have caused the captain to perceive (falsely) that the aircraft was ‘pitching up’. He responded by making a ‘nose-down’ input, and as a result, the aircraft descended and flew into the shallow sea.
(d) Neither the captain nor the first officer perceived, or effectively responded to, the threat of increasing proximity to the ground, in spite of repeated hard GPWS warnings.
(2) The systemic factors, identified at the time of the above accident, which could have led to the above individual factors, were:
(a) Organisational factors (Gulf Air):
(i) A lack of training in CRM contributing to the flight crew not performing as an effective team in operating the aircraft.
(ii) Inadequacy in the airline's A320 training programmes, such as: adherence to SOPs, CFIT, and GPWS responses.
(iii) The airline’s flight data analysis system was not functioning satisfactorily, and the flight safety department had a number of deficiencies.
(iv) Cases of non-compliance, and inadequate or slow responses in taking corrective actions to rectify them, on the part of the airline in some critical regulatory areas, were identified during three years preceding the accident.
(b) Safety oversight factors:
A review of about three years preceding the accident indicated that despite intensive efforts, the DGCAM as a regulatory authority could not make the operator comply with some critical regulatory
requirements.
Final Report:

Crash of a Boeing 767-366ER in the Atlantic Ocean: 217 killed

Date & Time: Oct 31, 1999 at 0152 LT
Type of aircraft:
Operator:
Registration:
SU-GAP
Flight Phase:
Survivors:
No
Schedule:
Los Angeles – New York – Cairo
MSN:
24542
YOM:
1989
Flight number:
MS990
Country:
Region:
Crew on board:
15
Crew fatalities:
Pax on board:
202
Pax fatalities:
Other fatalities:
Total fatalities:
217
Captain / Total flying hours:
14384
Captain / Total hours on type:
6356.00
Copilot / Total flying hours:
12538
Copilot / Total hours on type:
5191
Aircraft flight hours:
33354
Aircraft flight cycles:
7594
Circumstances:
EgyptAir Flight 990 departed Los Angeles International Airport, destined for Cairo, with a scheduled intermediate stop at New York-JFK. The aircraft landed at JFK about 23:48 EDT and arrived at the gate about 00:10 EDT. Two designated flight crews (each crew consisting of a captain and first officer) boarded the aircraft at JFK. The aircraft taxied to runway 22R and was cleared for takeoff at 01:19. Shortly after liftoff, the pilots of EgyptAir flight 990 contacted New York Terminal Radar Approach (and departure) Control (TRACON). New York TRACON issued a series of climb instructions and, at 01:26, instructed the flight to climb to FL230 and contact New York Air Route Traffic Control Center (ARTCC). At 01:35, New York ARTCC instructed EgyptAir flight 990 to climb to FL330 and proceed directly to DOVEY intersection. About 01:40 the relief first officer suggested that he relieve the command first officer at the controls. The command first officer agreed and left the flightdeck. The airplane leveled at FL330 four minutes later. At 01:48, the command captain decided to go to the toilet and left the flightdeck. At 01:48:30, about 11 seconds after the captain left the cockpit, the CVR recorded an unintelligible comment. Ten seconds later, the relief first officer stated quietly, "I rely on God." There were no sounds or events recorded by the flight recorders that would indicate that an airplane anomaly or other unusual circumstance preceded the relief first officer's statement. At 01:49:18, the CVR recorded the sound of an electric seat motor and 27 seconds later the autopilot was disconnected. At 01:49:48, the relief first officer again stated quietly, "I rely on God." At 01:49:53, the throttle levers were moved from their cruise power setting to idle, and, one second later, the FDR recorded an abrupt nose-down elevator movement and a very slight movement of the inboard ailerons. Subsequently, the airplane began to rapidly pitch nose down and descend. Between 0149:57 and 0150:05, the relief first officer quietly repeated, "I rely on God," seven additional times. During this time, as a result of the nose-down elevator movement, the airplane's load factor decreased from about 1 to about 0.2 G (almost weightlessness). Then the elevators started moving further in the nose-down direction. Immediately thereafter the captain entered the flightdeck and asked loudly, "What's happening? What's happening?". As he airplane's load factor reached negative G loads (about -0.2 G) the relief first officer stated for the tenth time, "I rely on God." At 01:50:08, as the airplane exceeded its maximum operating airspeed (0.86 Mach), a master warning alarm began to sound and the relief first officer stated quietly for the eleventh and final time, "I rely on God," and the captain repeated his question, "What's happening?" At 0150:15, as the airplane was descending through about 27,300 feet the airplane's rate of descent began to decrease. About 6 seconds later the left and right elevator surfaces began to move in opposite directions. The engine start lever switches for both engines then moved from the run to the cutoff position. At 01:50:24 the throttle levers started to move from their idle position to full throttle, and the speedbrake handle moved to its fully deployed position. The captain again asked "What is this? What is this? Did you shut the engine(s)?" At 01:50:26, the captain stated, "Get away in the engines ... shut the engines". The relief first officer replied "It's shut". Between 01:50:31 and 01:50:37, the captain repeatedly stated, "Pull with me." However, the elevator surfaces remained in a split condition (with the left surface commanding nose up and the right surface commanding nose down) until the FDR and CVR stopped recording. at 0150:36.64 and 0150:38.47, respectively. The height estimates based on primary radar data from the joint use FAA/U.S. Air Force (USAF) radar sites indicated that the airplane's descent stopped about 01:50:38 and that the airplane subsequently climbed to about 25,000 feet msl and changed heading from 80º to 140º before it started a second descent, which continued until the airplane impacted the ocean.
Probable cause:
The National Transportation Safety Board determines that the probable cause of the EgyptAir flight 990 accident is the airplane's departure from normal cruise flight and subsequent impact with the Atlantic Ocean as a result of the relief first officer's flight control inputs. The reason for the relief first officer's actions was not determined.
Final Report: