Crash of a De Havilland DHC-6 Twin Otter 300 in Hamada al Hamra: 14 killed

Date & Time: Nov 30, 1988 at 0720 LT
Registration:
5A-DDD
Survivors:
No
Schedule:
Hamada al Hamra - Tripoli
MSN:
670
YOM:
1980
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
14
Circumstances:
The twin engine aircraft departed Hamada al Hamra Airport at 0705LT bound for Tripoli carrying two pilots and 12 employees of the Arabian Gulf Oil Company and Halliburton Company. Few minutes after takeoff, the crew was instructed to return because military activity en route was ongoing. Unfortunately, the visibility at Hamada al Hamra Airport dropped due to fog. Following a short holding circuit, the crew attempted to land when, on short final, the aircraft struck successively a concrete pipeline bridge and a wooden electrical pylon then crashed few hundred meters short of runway, bursting into flames. The aircraft was destroyed and all 14 occupants were killed.
Probable cause:
It is possible that the pilot-in-command suffered an optical illusion on short final and mistook the the concrete pipeline bridge for the runway.

Crash of a Vickers 807 Viscount in Tangier

Date & Time: Nov 23, 1988
Type of aircraft:
Operator:
Registration:
G-BBVH
Survivors:
Yes
Schedule:
Gibraltar - Tangier
MSN:
281
YOM:
1957
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
74
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The approach to Tangier-Boukhalef Airport was completed in heavy rain falls with a wind from 060° gusting at 24 knots. After touchdown on a wet runway, the crew encountered difficulties to decelerate. Following a course of about 1,000 meters on runway 28, the four engine aircraft veered off runway to the left and came to rest in a ditch. All 78 occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
The assumption that the loss of control was the consequence of aquaplaning was not ruled out.

Crash of a Swearingen SA226TC Metro II in Johannesburg

Date & Time: Nov 18, 1988
Type of aircraft:
Operator:
Registration:
ZS-LKG
Flight Phase:
Survivors:
Yes
MSN:
TC-291
YOM:
1979
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
10
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from Johannesburg-Jan Smuts Airport, the crew declared an emergency following the failure of the left engine. The crew elected to return but eventually completed a belly landing in a field located near the airport. All 12 occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Failure of the left engine shortly after takeoff for unknown reasons.

Crash of a De Havilland DHC-5D Buffalo in Gondar: 1 killed

Date & Time: Nov 8, 1988 at 1045 LT
Type of aircraft:
Operator:
Registration:
ET-AHI
Flight Type:
Survivors:
Yes
Schedule:
Gondar - Addis Ababa
MSN:
101
YOM:
1981
Location:
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
After takeoff from Gondar Airport, while on a cargo flight to Addis Ababa, the hydraulic pressure failed. As the crew was unable to raise the landing gear, the captain decided to return for an emergency landing. With flaps down at 7°, the aircraft landed 400 meters past the runway threshold. Following a course of 900 meters, the aircraft veered off runway and came to rest in a ditch. A crew member was killed while three others were injured.

Crash of a Boeing 737-2F9 in Port Harcourt

Date & Time: Oct 15, 1988
Type of aircraft:
Operator:
Registration:
5N-ANW
Survivors:
Yes
Schedule:
Jos – Port Harcourt
MSN:
22771
YOM:
1982
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
124
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The approach to Port Harcourt Airport was completed in heavy rain falls. After touchdown, the airplane encountered difficulties to stop within the remaining distance and overran. While contacting soft ground, the nose and right main gear collapsed and the aircraft came to rest. 36 occupants were injured and the aircraft was damaged beyond repair.

Crash of a De Havilland DHC-6 Twin Otter 300 in Dori

Date & Time: Oct 8, 1988
Operator:
Registration:
XT-AAX
Flight Phase:
Survivors:
Yes
MSN:
490
YOM:
1976
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed on takeoff. There were no casualties.

Crash of a Douglas C-47A-1-DK in Harare

Date & Time: Sep 20, 1988
Operator:
Registration:
Z-WRJ
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
11989
YOM:
1943
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from Harare-Charles Prince Airport, while climbing, the right engine failed. The aircraft stalled and crashed 5 km from the airport. All three crew members were injured.
Probable cause:
Failure of the right engine during initial climb for unknown reasons.

Crash of a Boeing 737-260 in Bahar Dar: 35 killed

Date & Time: Sep 15, 1988 at 1305 LT
Type of aircraft:
Operator:
Registration:
ET-AJA
Survivors:
Yes
Schedule:
Addis Ababa - Bahar Dar - Asmara
MSN:
23914
YOM:
1987
Flight number:
ET604
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
98
Pax fatalities:
Other fatalities:
Total fatalities:
35
Captain / Total flying hours:
19936
Captain / Total hours on type:
449.00
Copilot / Total flying hours:
9447
Aircraft flight hours:
1377
Aircraft flight cycles:
1870
Circumstances:
Ethiopian Airlines flight 604, a Boeing 737-200, was a scheduled service from Addis Ababa to Bahar Dar and Asmara. The first leg of the flight was uneventful. At 09:50, the engines were started normally and the airplane was taxied to its take-off position. The flight crew reported that In order to gain additional thrust they elected not to use engine bleed air during take-off. The airplane accelerated at a normal rate during the take-off roll and passed V1 (take-off-reject) speed. As the airplane passed V1 and very near VR (rotation speed) the flight crew saw a flock of pigeons lifting up from the left side. At this time the captain took over control from the copilot and pulled up. Almost immediately after rotation, the airplane struck the flock of pigeons at an airspeed of 146 knots and altitude of 5730 feet above mean sea level. Loud bangs were heard. The captain then called for gear up and the copilot complied. At approximately 100-200 ft. above the ground, both engines started backfiring. At this time, the flight crew reported that they experienced a considerable power loss and the airplane started mushing down at which time the captain "fire walled" the thrust levers. The engines reportedly responded and the airplane began to gain some altitude. The gain in attitude encouraged the captain to make a right turn away from Lake Tana and back to the take-off runway for landing. During the initial 32 seconds after the impact, the airplane had gained altitude from 5,730 feet to 6,020 feet and had accelerated from 146 knots to 154 knots. The crew report further indicated that both engines continued to surge and the exhaust gas temperature gauges (EGT) were reading at the top extreme and the engine pressure ratio (EPR) gauge readings were fluctuating at about 1.6. During this time the captain reported that the he reduced engine thrust to prolong the operational life of the engines. The frequency of the surges decreased with engines power reduction. The airplane entered an approximate 90 degree right turn. Altitude remained constant 6,020 feet while its airspeed increased from 154 knots to 162 knots. The airplane then began another right turn and entered the downwind leg of the return to runway 04. Altitude had increased to 6,410 feet and airspeed to 173 knots. On the downwind leg the aircraft further climbed to 7,100 feet. Then, within a timeframe of about five seconds, both engines lost power completely. The copilot pointed out a cleared area slightly ahead and to the right. The captain then turned towards the clearing and performed a gear-up landing. The aircraft broke up and a fire erupted. Out of the 104 occupants, 35 suffered fatal injuries.
Probable cause:
The accident occurred because the airplane could not be safely returned to the runway after the internal destruction and subsequent failure of both engines to operate arising from multiple bird ingestion by both engines during take-off.