Bangladesh

Flight Type:

Survivors:

Site:

Schedule:

Dhaka - Cox's Bazar

MSN:

379

YOM:

1993

Flight number:

4H501

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Following an uneventful flight from Dhaka, the crew initiated the approach to Cox's Bazar in poor weather conditions due to heavy rain falls. After touchdown, the nose gear collapsed. The airplane slid on its nose for few dozen metres before coming to rest in the middle of the runway that was blocked for almost 22 hours. All 48 occupants evacuated safely while the aircraft was damaged beyond repair.

Crash of an ATR72-500 in Dhaka

Date & Time: Apr 30, 2012 at 0851 LT

Type of aircraft:

ATR72-500

Operator:

Registration:

60314

Flight Phase:

Flight Type:

Military

Survivors:

Site:

Schedule:

Bangkok - Dhaka

MSN:

881

YOM:

2009

Flight number:

KAT304

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

After landing at Dhaka-Hazrat Shahjalal Airport, the twin engine aircraft deviated to the right and veered off runway. It collided with an embankment, lost its undercarriage and came to rest against a concrete wall. All 15 occupants were rescued, among them two passengers were slightly injured.

Ground fire of a Boeing 747-357 in Dhaka

Date & Time: Mar 25, 2008 at 0827 LT

Type of aircraft:

Boeing 747-300

Operator:

Registration:

TF-ARS

Flight Phase:

Charter/Taxi (Non Scheduled Revenue Flight)

Flight Type:

Survivors:

Site:

Schedule:

Madinah - Dhaka

MSN:

22996/586

YOM:

1983

Flight number:

SV810

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

307

Pax fatalities:

Other fatalities:

Total fatalities:

Captain / Total flying hours:

18137

Captain / Total hours on type:

5637.00

Copilot / Total flying hours:

7161

Copilot / Total hours on type:

261

Aircraft flight hours:

99327

Aircraft flight cycles:

18779

Circumstances:

TF-ARS (B747-300) was on a scheduled flight from Medina (Saudi Arabia) to Dhaka (Bangladesh), flight number SVA810. The flight crew consisted of a commander, copilot and a flight engineer. The cabin crew consisted of 15 crew members including one senior cabin attendant. Additionally to the cabin crew, one “off duty” cabin crew member was in the cabin. According to the commander, the flight from Medina and the landing at Dhaka was uneventful. During the landing roll, approximately 50 seconds after touchdown, the flight crew received a call from the tower controller where the tower controller inquired whether the aircraft was under control. The flight crew responded to the call by stating that the aircraft was completely under control and asked what the problem seemed to be. The controller then informed the flight crew that fire was observed at the right wing area. At this point the Aerodrome Fire Operator had already activated the fire fighters as well as the rescue team. As soon as the controller had informed the flight crew about the fire, the flight crew received a No. 3 engine fire alarm. The co-pilot immediately discharged the first engine fire bottle and the flight crew requested firefighter assistance and shut down all engines. The co-pilot waited 20 seconds until the second fire bottle was discharged. At this time the commander called the senior cabin attendant to the flight deck using the public address system (PA). This command was followed by a command to the cabin crew to remain seated. The commander informed the senior cabin attendant of the situation and instructed him to evaluate the situation and to evacuate the passengers if necessary. The senior cabin attendant went back down to the main deck and saw the smoke and the fire through the windows. He then commanded the cabin crew as well as passengers, by using a megaphone, to evacuate the aircraft. The cabin attendant at location L2 (see figure 6-7, page 21) had already operated the emergency exit and started evacuating the passengers. Cabin attendants at locations L1 and R2 (see figure 6-7, page 21) also operated their respective emergency exits. After realizing that smoke and fire were at the right hand side, the emergency exit at R2 was blocked by one of the cabin attendants. All passengers managed to evacuate without serious injuries and the fire department at Zia International Airport managed to extinguish the fire successfully. The damage to the aircraft was later evaluated as beyond economical repair.

Probable cause:

When TF-ARS was decelerating after landing on runway 14 at Zia International Airport, fuel leak at engine No. 3 resulted in a fire within the strut. The cause of the fire was that fuel was leaking through the flexible half coupling to the hot surface of the engine. The fuel leak was because the O-ring and retaining rings were not properly assembled within the coupling and one retaining ring was missing. The IAAIB considers unclear instructions in the aircraft maintenance manual (AMM) to be a contributing factor of the incorrect installation. Another incorrect installation was also found at the flexible half coupling at the front spar for engine No. 1. However there were no signs of a fuel leak in that area, most likely due to the fact that both the retaining rings and the O-ring were within the coupling even though they were incorrectly placed. During the investigation, it was not possible to determine the quantity of the fuel leak. However it is likely that the draining system within the strut of engine No. 3 could not manage the fuel leak. According to the manufacturer, the intention of the draining system is to drain drips or small running leaks. Furthermore the drain was clogged by debris, but IAAIB believes that this was a result of the fire. Two out of six suitable emergency exits on the left side were used (L1 and L2) to evacuate most of the passengers during the emergency evacuation. The reason for not opening doors at location L3, L4 and L5 initially was most likely due to the fact that the commander ordered the cabin crew to remain seated prior to the emergency evacuation. The cabin crew members at locations L3 to L5 most likely did not hear the emergency evacuation command from the senior cabin crew member as he was only using a megaphone. Furthermore these exits were not opened later since the passengers moved aggressively to the opened exits, L1 and L2. The reason for not opening emergency exit UDL at the upper deck was evaluated by the crew to be too risky for the passengers. The flight crew discharged both fire bottles for engine No. 3 without managing to extinguish the fire. The flight crew did not discharge fire bottles on other engines. According to the passenger evacuation checklist (see Appendix 2), the crew should discharge all fire bottles before evacuation.
Findings as to causes and contributing factors:
- Incorrect assembly of the flexible half coupling at the front spar of engine No. 3.
- Retaining ring missing in flexible half coupling at the front spar engine No. 3.
- Lock wire fastened in such a way that the coupling nut might rotate slightly.
Findings as to risk:
- Unclear command made to the cabin crew to start emergency evacuation.
- Cabin crew did not open all suitable emergency exits.
- Flight crew did not follow company’s procedure regarding evacuation.
Other findings:
- Retaining rings and O-ring incorrectly inserted in the flexible half coupling on engine No. 1.
- Pliers used to tighten or loosen the coupling nuts, even though maintenance manual instructs to only hand tight the nuts.

Final Report:

Crash of a Douglas DC-10-30ER in Chittagong

Date & Time: Jul 1, 2005 at 0853 LT

Type of aircraft:

Douglas DC-10

Operator:

Registration:

S2-ADN

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Dubai - Chittagong - Dhaka

MSN:

46542

YOM:

1979

Flight number:

BG048

Location:

Chittagong

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

201

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The aircraft departed Dubai on a flight to Dhaka with an intermediate stop in Chittagong, carrying 201 passengers and a crew of 15. Weather conditions at Chittagong Airport were poor with a visibility of 1,800 metres in rain, 5-7 oktas cloud at 700 feet, 3-4 oktas cloud at 1,300 feet, 0-2 oktas cloud at 2,600 feet, overcast at 8,000 feet with CB's, temporary visibility of 2 km and wind from 180 at 6 knots. On final approach, the aircraft was unstable but the captain decided to continue the descent. After touchdown on runway 23, the aircraft deviated from the centerline to the right, causing the right main gear to veer off runway. While contacting soft ground, it was torn off, causing the engine n°3 to be partially sheared off. The aircraft slid for few dozen metres before coming to rest in a grassy area along the runway. All 216 occupants evacuated safely and the aircraft was damaged beyond repair.

Probable cause:

Wrong approach configuration on part of the crew who failed to follow the SOP's and his failure to initiate a go-around while the aircraft was unstable on short final.

Crash of a Fokker F28 Fellowship 4000 in Sylhet

Date & Time: Oct 8, 2004 at 0915 LT

Type of aircraft:

Fokker F28 Fellowship

Operator:

Registration:

S2-ACH

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Dhaka - Sylhet

MSN:

11172

YOM:

1981

Flight number:

BG601

Location:

Sylhet

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The flight from Dhaka to Sylhet was delayed for few hours due to poor weather conditions at destination with limited visibility, heavy rain falls, low ceiling and strong winds. Following an uneventful flight, the aircraft landed too far down a wet runway. Unable to stop within the remaining distance, it overran and came to rest in a drainage ditch. 30 passengers were slightly injured while all other occupants escaped unhurt. Both pilots were seriously injured as the cockpit was trapped against an earth wall.

Probable cause:

It was determined that the crew failed to refer to the PAPI's and following a wrong approach configuration, the aircraft landed too far down the runway, reducing the landing distance available. The following contributing factors were reported:
- The ILS system was not properly calibrated, causing the aircraft to land about 900 feet past the runway threshold,
- The aircraft was too high on approach,
- The aircraft' speed at touchdown was 20 knots above the reference speed,
- The braking action was considered as low because the runway surface was wet,
- Aquaplaning,
- The crew failed to initiate a go-around procedure.

Crash of a Boeing 707-3J6C in Dhaka

Date & Time: Jul 11, 2003 at 0638 LT

Type of aircraft:

Boeing 707

Operator:

Registration:

5X-AMW

Flight Phase:

Takeoff (climb)

Flight Type:

Cargo

Survivors:

Site:

Schedule:

Dhaka - Amman

MSN:

20723

YOM:

1974

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

During the takeoff roll from runway 14 at Dhaka-Zia Ul-Haq Airport, the crew encountered an unexpected situation and the captain decided to abandon the takeoff procedure. Unable to stop within the remaining distance (runway 14 is 3,200 metres long), the aircraft overran, lost its undercarriage and came to rest 450 metres further. All five crew members escaped uninjured while the aircraft was damaged beyond repair.

Crash of a Let L-410UVP-E in Dhaka

Date & Time: Jun 27, 1998

Type of aircraft:

Let L-410

Operator:

Air Parabat

Registration:

S2-ADD

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Ishwardi - Dhaka

MSN:

91 26 18

YOM:

1991

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

While approaching Dhaka-Tejgaon Airport at an altitude of 4,000 feet, the crew encountered technical problems with the right engine they shut down. Few seconds later, the crew was able to restart the right engine but as the temperature of the turbine increased, he shut down the engine again. This time, he was unable to feather the propeller. Due to excessive drag, the aircraft lost height and the captain attempted an emergency landing in an open field. On landing, the aircraft lost its undercarriage and came to rest. All seven occupants escaped uninjured while the aircraft was damaged beyond repair.

Probable cause:

Failure of the right engine for unknown reasons. Failure of the automatic propeller pitch control mechanism was a contributing factor.

Crash of a Fokker F28 Fellowship 4000 in Sylhet

Date & Time: Dec 22, 1997 at 2236 LT

Type of aircraft:

Fokker F28 Fellowship

Operator:

Registration:

S2-ACJ

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Dhaka - Sylhet

MSN:

11180

YOM:

1981

Flight number:

BG609

Location:

Sylhet

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

On approach to Sylhet Airport, the crew encountered foggy conditions. Due to poor visibility, the crew was unable to establish a visual contact with the approach and runway lights so the decision was taken to initiate a go-around procedure. Few minutes later, a second attempt to land was abandoned for the same reason. The captain insisted and elected to make another approach. On final, the aircraft descended below the MDA and struck the ground 3 km short of runway threshold. On impact, the undercarriage were torn off and the aircraft came to rest in a waterlogged area, broken in two. All 89 occupants were rescued, among them 50 were slightly injured.

Probable cause:

Controlled flight into terrain after the crew continued the descent below MDA without visual contact with the ground until the aircraft impacted terrain.

Crash of a Fokker F27 Friendship 600 in Dhaka: 49 killed

Date & Time: Aug 5, 1984

Type of aircraft:

Fokker F27 Friendship

Operator:

Registration:

S2-ABJ

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Chittagong - Dhaka

MSN:

10453

YOM:

1971

Location:

Country:

Region: