Narrative:
A Beechcraft 300 Super King Air 350 sustained severe damage in a landing gear collapse accident at Singapore-Seletar Airport.
The aircraft, RP-C1587 took off from Seletar runway 21 at 16:11 hours for an acceptance test flight after undergoing a 5-year inspection/maintenance programme performed by a maintenance company at Seletar Airport. After takeoff, the tower controller noticed that the aircrafts left main landing gear was not retracted. The controller informed the pilot immediately. The pilot checked and confirmed that the left main landing gear was not retracted and locked. The pilot also noticed that the landing gear circuit breaker had tripped and the red light on the landing gear control handle was illuminated.
The pilot reset the circuit breaker and cycled the landing gears down. However, the left main landing gear remained unlocked and the circuit breaker tripped again. The pilot attempted to retract the landing gears again. The left main landing gear remained un-retracted and unlocked, and the circuit breaker tripped again. The pilot decided to carry out an emergency gear extension and return to Seletar Airport.
Upon landing on runway 21 at 16:25 hours, the left main landing gear of the aircraft collapsed and the aircraft skidded onto the grass verge on the left of the runway. There was no fire.
Contributory Factors: "The left main landing gear collapsed because the landing gear was not locked. The landing gear was not able to be locked because the actuator clevis had fractured under bending load. The bending load was induced because of insufficient spacing washers at the clevis head. There is also evidence that the clevis was embrittled during manufacture."
Runway mishap
WSSL 190800Z 26007 KT 240V300 9999 (05) FEW020 OVC270 31/32 Q1007
09:00 UTC / 17:00 local time:
WSSL 190900Z 24005 KT 210V270 9999 (05) FEW020 BKN270 30/23 Q1007
| Status: | Accident investigation report completed and information captured |
| Date: | Thursday 19 October 2000 |
| Time: | 16:25 |
| Type: |  Beechcraft 300 Super King Air 350 |
| Operator: | Philippines American Life Insurance Company |
| Registration: | RP-C1587 |
| MSN: | FL-20 |
| First flight: | 1990 |
| Total airframe hrs: | 2218 |
| Crew: | Fatalities: 0 / Occupants: 2 |
| Passengers: | Fatalities: 0 / Occupants: 3 |
| Total: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Location: | Singapore-Seletar Airport (XSP) ( Singapore)
|
| Phase: | Landing (LDG) |
| Nature: | Test |
| Departure airport: | Singapore-Seletar Airport (XSP/WSSL), Singapore |
| Singapore-Seletar Airport (XSP/WSSL), Singapore |
A Beechcraft 300 Super King Air 350 sustained severe damage in a landing gear collapse accident at Singapore-Seletar Airport.
The aircraft, RP-C1587 took off from Seletar runway 21 at 16:11 hours for an acceptance test flight after undergoing a 5-year inspection/maintenance programme performed by a maintenance company at Seletar Airport. After takeoff, the tower controller noticed that the aircrafts left main landing gear was not retracted. The controller informed the pilot immediately. The pilot checked and confirmed that the left main landing gear was not retracted and locked. The pilot also noticed that the landing gear circuit breaker had tripped and the red light on the landing gear control handle was illuminated.
The pilot reset the circuit breaker and cycled the landing gears down. However, the left main landing gear remained unlocked and the circuit breaker tripped again. The pilot attempted to retract the landing gears again. The left main landing gear remained un-retracted and unlocked, and the circuit breaker tripped again. The pilot decided to carry out an emergency gear extension and return to Seletar Airport.
Upon landing on runway 21 at 16:25 hours, the left main landing gear of the aircraft collapsed and the aircraft skidded onto the grass verge on the left of the runway. There was no fire.
Probable Cause:
Contributory Factors: "The left main landing gear collapsed because the landing gear was not locked. The landing gear was not able to be locked because the actuator clevis had fractured under bending load. The bending load was induced because of insufficient spacing washers at the clevis head. There is also evidence that the clevis was embrittled during manufacture."
Classification:
Wrong installation of parts Runway mishap
Sources:
» Final report MOT/CA/RP-C1587METAR Weather report:
08:00 UTC / 16:00 local time:WSSL 190800Z 26007 KT 240V300 9999 (05) FEW020 OVC270 31/32 Q1007
09:00 UTC / 17:00 local time:
WSSL 190900Z 24005 KT 210V270 9999 (05) FEW020 BKN270 30/23 Q1007
Follow-up / safety actions
AAIB Singapore issued 5 Safety Recommendations
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This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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