Crash of a Douglas DC-9-32 in Prague: 75 killed

Date & Time: Oct 30, 1975 at 0920 LT
Type of aircraft:
Operator:
Registration:
YU-AJO
Survivors:
Yes
Schedule:
Tivat - Prague
MSN:
47457/620
YOM:
1971
Flight number:
JP450
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
115
Pax fatalities:
Other fatalities:
Total fatalities:
75
Circumstances:
While descending to Prague-Ruzyne Airport, the crew encountered poor weather conditions with fog, rain and a visibility limited to 1,500 meters. The crew passed below the MDA and the aircraft entered the Vltava Valley when the captain decided to gain height and increased engine power. The airplane struck tree tops and crashed in a residential area (houses and gardens) located about 8 km short of runway. 45 people were injured, among them a crew member, while 75 other occupants were killed. At the time of the accident, the ILS system was inoperative.
Probable cause:
The crew descended below the MDA in foggy conditions until the airplane struck obstacles and crashed.

Crash of a Douglas DC-9-14 near Maturín: 75 killed

Date & Time: Dec 22, 1974 at 1330 LT
Type of aircraft:
Operator:
Registration:
YV-C-AVM
Flight Phase:
Survivors:
No
Schedule:
Ciudad Bolivar – Maturín – Caracas
MSN:
47056
YOM:
1966
Flight number:
VE358
Country:
Crew on board:
6
Crew fatalities:
Pax on board:
69
Pax fatalities:
Other fatalities:
Total fatalities:
75
Circumstances:
Four minutes after takeoff from runway 05 at Maturín-Quiriquire Airport, while climbing to an altitude of 1,500 meters, the airplane went out of control, entered a dive and crashed in a field located about 20 km from the airport. The aircraft disintegrated on impact and all 75 occupants have been killed.
Probable cause:
The exact cause of the accident could not be determined with certainty. Nevertheless, the assumption that the loss of control was the consequence of an elevator failure was not ruled out.

Crash of a Douglas DC-9-32 in Belgrade

Date & Time: Nov 23, 1974
Type of aircraft:
Operator:
Registration:
YU-AJN
Survivors:
Yes
Schedule:
Paris - Belgrade
MSN:
47579/693
YOM:
1973
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
44
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On final approach to Belgrade-Surčin Airport, the crew encountered marginal weather conditions with patches of fog and a visibility limited to 2,500 meters with 7/8 of clouds at 1,500 meters. The pilot-in-command decided to continue the approach after he lost visual contact with the ground when the airplane struck the ground 2,570 meters short of runway threshold. On impact, the undercarriage were torn off and the airplane slid for several meters before coming to rest in flammes. All 50 occupants were able to evacuate the cabin and only four passengers were slightly injured while the aircraft was totally destroyed by a post crash fire.
Probable cause:
Wrong approach configuration on part of the flying crew who decided to continue the approach below the minimum descent altitude in limited visibility after visual contact was lost with the ground.

Crash of a Douglas DC-9-31 in Charlotte: 72 killed

Date & Time: Sep 11, 1974 at 0734 LT
Type of aircraft:
Operator:
Registration:
N8984E
Survivors:
Yes
Schedule:
Charleston - Charlotte - Chicago
MSN:
47400/443
YOM:
1969
Flight number:
EA212
Crew on board:
4
Crew fatalities:
Pax on board:
78
Pax fatalities:
Other fatalities:
Total fatalities:
72
Captain / Total flying hours:
8876
Captain / Total hours on type:
3856.00
Copilot / Total flying hours:
3016
Copilot / Total hours on type:
2693
Aircraft flight hours:
16860
Circumstances:
Eastern Air Lines Flight 212, a Douglas DC-9-31, N8984E, operated as a scheduled passenger flight from Charleston, South Carolina, to Chicago, Illinois, with an en route stop at Charlotte, North Carolina. The flight departed Charleston at 07:00 hours local time with 78 passengers and 4 crew members on board. The first officer was Pilot Flying. During the descent into Charlotte, until about 2 minutes and 30 seconds prior to the accident, the flight crew engaged in conversations not pertinent to the operation of the aircraft. These conversations covered a number of subjects, from politics to used cars, and both crew members expressed strong views and mild aggravation concerning the subjects discussed. At 07:32:13, as the flight intercepted the inbound VOR radial for the approach, the flight crew commenced a discussion of Carowinds Tower, which was located ahead and to the left of the projected flight path. This discussion lasted 35 seconds, during which 12 remarks were made concerning the subject. A considerable degree of the flight crew's attention was directed outside the cockpit during that time. During this period, the aircraft descended through 1,800 feet (1,074 feet above touchdown elevation), the altitude which should have been maintained until it crossed Ross Intersection, the final approach fix (FAF). At the end of the 35-second period, the aircraft was still 1.5 nm short of the FAF. At 07:32:41, during the latter part of the discussion regarding Carowinds Tower, the terrain warning alert sounded in the cockpit, signifying that the aircraft was 1,000 feet above the ground. Within seconds after the discussion of Carowinds Tower terminated at 07:32:48, the rate of descent of the aircraft was slowed from about 1,500 feet per minute to less than 300 feet per minute. At 07:33:24, the aircraft passed over Ross Intersection (the FAF) at an altitude of 1,350 feet (624 feet above field elevation), which is 450 feet below the prescribed crossing altitude. The captain did not make the required callout at the FAF, which should have included the altitude (above field elevation) and deviation from the Vref speed. Although shortly before crossing the FAF, one of the pilots stated "three ninety four," a reference to the MDA in height above field elevation. While in the vicinity of Ross Intersection, the first officer asked for 50 degrees of flaps; this request was carried out by the captain. The airspeed at this time was 168 knots, as contrasted with the recommended procedure which calls for the airspeed when passing over the FAF to be in the area of Vref, which in this instance was 122 knots. At 07:33:36, the captain advised Charlotte Tower that they were by Ross Intersection. The local controller cleared the flight to land on runway 36. The last radio transmission from the flight was the acknowledgement, "Alright," at 07:33:46. Shortly after passing Ross Intersection, the aircraft passed through an altitude of 500 feet above field elevation, which should have prompted the captain to call out altitude, deviation from Vref speed, and rate of descent. No such callout was made, nor was the required callout made when the plane descended through an altitude 100 feet above the MDA of 394 feet above the field elevation. The descent rate, after passing Ross, increased to 800 feet per minute, where it stabilized until approximately 7 to 8 seconds prior to impact, when it steepened considerably. According to the CVR, at 0733:52, the captain said, "Yeah, we're all ready," followed shortly thereafter by "All we got to do is find the airport". At 07:33:57, the first officer answered "Yeah". About one-half second later both pilots shouted. The aircraft struck some small trees and then impacted a cornfield about 100 feet below the airport elevation of 748 feet. The aircraft struck larger trees, broke up, and burst into flames. It was destroyed by the impact and ensuing fire. The aircraft crashed about 1.75 statute miles from Ross Intersection and about 3.3 statute miles short of the threshold of runway 36. Eleven passengers and two crew members survived the crash and fire. One passenger died 3 days after the crash, one after 6 days and another passenger died 29 days after the accident.
Probable cause:
The flight crew's lack of altitude awareness at critical points during the approach due to poor cockpit discipline in that the crew did not follow prescribed procedure. The following factors were reported:
- The extraneous conversation conducted by the flight crew during the descent was symptomatic of a lax atmosphere in the cockpit which continued throughout the approach.
- The terrain warning alert sounded at 1,000 feet above the ground but was not heeded by the flight crew,
- The aircraft descended through the final approach fix altitude of 1,800 feet more than 2 miles before the final approach fix was reached at an airspeed of 186 knots,
- The aircraft passed over the final approach fix at an altitude of 1,350 feet (or 450 feet below the prescribed crossing altitude) and at an airspeed of 168 knots, as compared
to the Vref speed of 122 knots,
- Required callouts were not made at the final approach fix, at an altitude of 500 feet above field elevation, or at 100 feet above the minimum descent altitude,
_ A severe post impact fire occurred immediately after the initial impact,
- Fatal injuries were caused by impact and thermal trauma,
- The door exits, except for the auxiliary exit in the tail, were blocked externally.
Final Report:

Crash of a Douglas DC-9-31 in Akron

Date & Time: Nov 27, 1973 at 2129 LT
Type of aircraft:
Operator:
Registration:
N8967E
Survivors:
Yes
Schedule:
Miami - Pittsburgh - Akron
MSN:
47267/361
YOM:
1968
Flight number:
EA300
Crew on board:
5
Crew fatalities:
Pax on board:
21
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
10881
Captain / Total hours on type:
736.00
Copilot / Total flying hours:
7000
Copilot / Total hours on type:
23
Aircraft flight hours:
15615
Circumstances:
The crew started the approach to Akron-Canton Airport by night and marginal weather conditions. The approach speed was too high and the airplane was also too high and the glide so the crew landed 2,400 feet to far down the runway 01. After touchdown on a wet runway, the airplane was unable to stop within the remaining distance, overran and came to rest. All 26 occupants were evacuated, 15 of them were injured. The aircraft was damaged beyond repair.
Probable cause:
The captain's decision to complete the landing at an excessive airspeed and at a distance too far down a wet runway to permit the safe stopping of the aircraft. Factors which contributed to the accident were:
- Lack of airspeed awareness during the final portion of the approach,
- An erroneous indication of the speed command indicator,
- Hydroplaning.
Final Report:

Crash of a Douglas DC-9-32 in Chattanooga

Date & Time: Nov 27, 1973 at 1851 LT
Type of aircraft:
Operator:
Registration:
N3323L
Survivors:
Yes
Schedule:
Atlanta - Chattanooga
MSN:
47032/204
YOM:
1967
Flight number:
DL516
Crew on board:
5
Crew fatalities:
Pax on board:
74
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
15949
Captain / Total hours on type:
3218.00
Copilot / Total flying hours:
6301
Copilot / Total hours on type:
4000
Aircraft flight hours:
18233
Circumstances:
Following an uneventful flight from Atlanta, the crew started the approach to Chattanooga Airport in poor weather conditions with limited visibility due to heavy rain falls. On short final, the crew failed to realize his altitude was insufficient when the airplane struck approach light located 1,600 feet short of runway 20 threshold. The airplane then struck the ground, lost its left wing and skidded for another 1,200 feet before coming to rest 250 feet to the left of the runway centerline. All 79 occupants evacuated safely and only seven passengers were slightly injured.
Probable cause:
The pilot did not recognize the need to correct an excessive rate of descent after the aircraft had passed decision height. This occurred despite two verbal reports of increasing sink rate by the first officer. The captain disregarded the reports by the first officer, possibly because of the influence of a visual illusion caused by the refraction of light through the heavy rain on the windshield. The excessive rate of descent was initiated by a wind shear condition which extended in the lower levels of the approach path and a glide slope that tended toward the lower signal limit.
Final Report:

Crash of a Douglas DC-9-31 in Boston: 88 killed

Date & Time: Jul 31, 1973 at 1108 LT
Type of aircraft:
Operator:
Registration:
N975NE
Survivors:
No
Schedule:
Burlington - Manchester - Boston
MSN:
47075/166
YOM:
1967
Flight number:
DL723
Crew on board:
6
Crew fatalities:
Pax on board:
83
Pax fatalities:
Other fatalities:
Total fatalities:
88
Captain / Total flying hours:
14840
Captain / Total hours on type:
1457.00
Copilot / Total flying hours:
6994
Copilot / Total hours on type:
217
Aircraft flight hours:
14639
Circumstances:
As Delta Flight 723 was descending, the approach clearance was given by the controller after a delay, because the controller was preoccupied with a potential conflict between two other aircraft. This caused the flight to be poorly positioned for approach. The aircraft passed the Outer Marker at a speed of 385 km/h (80 km/h too fast) and was 60 m above the glide slope. The flight director was inadvertently used in the 'go-around-mode', which led to abnormal instrument indications. This caused some confusion. The first officer, who was flying the approach became preoccupied with the problem. The DC-9 continued to descend and struck a seawall 3000 feet short of and 150 feet to the right of runway 04R, crashed and caught fire. RVR at the time was 500 m with 60 m overcast. Two passengers survived, one died a day later while the second passed away on December 11, 1973.
Probable cause:
The failure of the flight crew to monitor altitude and to recognize passage of the aircraft through the approach decision height during an unstabilized precision approach conducted in rapidly changing meteorological conditions. The unstabilized nature of the approach was due initially to the aircraft's passing the outer marker above the glide slope at an excessive airspeed and thereafter compounded by the flight crew's preoccupation with the questionable information presented by the flight director system. The poor positioning of the flight for the approach was in part the result of nonstandard air traffic control services.
Final Report:

Crash of a Douglas DC-9-15 near Puerto Vallarta: 27 killed

Date & Time: Jun 20, 1973 at 2247 LT
Type of aircraft:
Operator:
Registration:
XA-SOC
Survivors:
No
Site:
Schedule:
Houston - Monterrey - Puerto Vallarta - Mexico City
MSN:
47100/153
YOM:
1967
Flight number:
AM229
Country:
Crew on board:
5
Crew fatalities:
Pax on board:
22
Pax fatalities:
Other fatalities:
Total fatalities:
27
Circumstances:
The crew started the descent to Puerto Vallarta-Gustavo Diaz Ordaz Airport in limited visibility due to the night. Too low, the airplane struck the slope of Mt Las Minas located 32 km short of runway 04. The aircraft was destroyed and all 27 occupants were killed.

Crash of a Douglas DC-9-32 in La Planche: 68 killed

Date & Time: Mar 5, 1973 at 1352 LT
Type of aircraft:
Operator:
Registration:
EC-BII
Flight Phase:
Survivors:
No
Schedule:
Palma de Majorca - London
MSN:
47077/148
YOM:
1967
Flight number:
IB504
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
61
Pax fatalities:
Other fatalities:
Total fatalities:
68
Captain / Total flying hours:
6612
Captain / Total hours on type:
823.00
Copilot / Total flying hours:
3378
Copilot / Total hours on type:
2278
Aircraft flight hours:
10852
Aircraft flight cycles:
9452
Circumstances:
Iberia Flight 504, a DC-9, departed Palma de Majorca at 11:24 for a flight to London. At 12:19 the crew contacted Marina Control and reported at FL310, estimating at Nantes VOR at 12:52. At 12:36 the crew were told to contact Menhir Control and descend to FL290. At the same time a Spantax Convair CV-990, flight BX400 heading for London, was flying towards the Nantes VOR on the same altitude, but on a different airway. Because of this, the Convair crew were instructed arrive at the VOR at 13:00. Because the Convair was already quite close to the VOR the crew asked for confirmation of these instructions. At 12:40 the controller told them to 'Stand by' and replied two minutes later. Because the aircraft was at the ATC sector boundary the crew could barely hear the Marina controller who instructed them to contact Menhir control. The pilot erroneously thought he had to contact Menhir control when passing the Nantes VOR. In order to delay their arrival at the VOR the Spantax crew twice tried to request permission to carry out a 360-degree turn. When they did not get any answer from Marina, they initiated the turn without clearance. While in the midst of an overcast, the Convair collided with the DC-9. The CV-990 lost an outboard portion of its left wing and managed to carry out an emergency landing at Cognac-Châteaubernard Air Base (CNG). The DC-9 lost control and crashed. The air traffic control system had been taken over that day by military personnel because of a strike of the civilian controllers. The wreckage of the DC-9 was found in La Planche, about 25 km southeast of Nantes. All 68 occupants have been killed.
Probable cause:
The Clement Marot Plan, the military contingency system to replace the civil air traffic services units in the event of a strike, by the very reason of its exceptional nature implied the use of rigorous planning traffic limitation per sector on the basis of control capacity and particularly strict compliance with the special regulations of the RAC-7 plan. The assignment of the same flight level by the control to the two aircraft IB 504 and BX 400, due to arrive at Nantes at the same time, created a source of conflict. The solution chosen by Menhir to resolve the conflict was based on separation in time. This solution, because of the reduction in normal separation, necessitated either particularly precise navigation by the crew of BX 400 or complete radar coverage and, in both cases, trouble-free communication facilities, conditions which were not realized. The continuing progress of the flight was affected by delays attributable in part to the control, in part to the crew and also to difficulty in air/ground radio communications resulting in complete failure of the crew and the control to understand one another. At the critical juncture, the crew, unmindful of their exact position, commenced a turn in order to lose time, without having been able to obtain the agreement of the control, as a result of which the aircraft interesected the adjacent route. The unidentified aircraft whose return appeared on the radar scope of one of the Menhir sub-sectors was' not identified by Menhir control as BX 400.
Final Report:

Crash of a Douglas DC-9-21 in Oslo

Date & Time: Jan 30, 1973 at 2319 LT
Type of aircraft:
Operator:
Registration:
LN-RLM
Flight Phase:
Survivors:
Yes
Schedule:
Oslo - Tromsö - Alta
MSN:
47304/440
YOM:
1969
Flight number:
SK370
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
29
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After liftoff from runway 24 at Oslo-Fornebu Airport, while climbing to a height of 30 feet at a speed of 140 knots, the stall warning activated. The captain decided to land but the remaining distance of 1,100 meters was insufficient. Unable to stop, the aircraft overran and plunged into the bay. All 33 occupants were quickly rescued while the aircraft was damaged beyond repair.
Probable cause:
Investigations were able to determine that the speed of the aircraft was correct but that the stall warning light was triggered following an error on the computer that misinterpreted some parameters transmitted by the Pitot tubes. It was reported that the aircraft suffered false stall warnings a couple of times during the past few days.