ASN Wikibase Occurrence # 181814
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| Date: | Thursday 22 February 1996 |
| Time: | 18:18 LT |
| Type: |  Boeing 707-323C |
| Owner/operator: | Millon Air |
| Registration: | N751MA |
| MSN: | 19582 |
| Year of manufacture: | 1967 |
| Total airframe hrs: | 63522 hours |
| Engine model: | P&W JT3D-3B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Miami International Airport, FL (MIA/KMIA) -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Manaus, OF (SBEG) |
| (KMIA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
One hour after departure, the aircraft lost all hydraulic fluid from the utility hydraulic system. On approach to Miami, the flight engineer manually extended the main landing gear. Attempts to manually lower the nose landing gear were unsuccessful. A fly-by of the tower indicated the nose gear doors were open and the gear was retracted. The aircraft was landed in this configuration. After the incident, the aircraft was raised, and the nose landing gear was extended using the normal manual extension system. After the aircraft was taken to a hangar, the nose landing gear was retracted and manually extended 4 more times with no evidence of failure or malfunction. The utility hydraulic system relief valve housing failed due to fatigue cracking, resulting in the loss of all hydraulic fluid. The flight engineer had been flying for 21 days as a flight engineer at the operator and had accumulated 25 flight hours. He reported he had 54 total flight hours as flight engineer in the Boeing 707 and 3,800 flight hours as flight engineer in the Douglas DC-8.
Probable Cause: failure of the flight engineer to follow the appropriate emergency procedure to manually extend the nose landing gear. Factors relating to the incident were: fatigue failure of the utility hydraulic system relief valve, which resulted in an inoperative normal gear extension system; the flight engineer's lack of total time in the incident aircraft; and inadequate training given by the aircraft operator.
Accident investigation:
 |
|
Sources:
NTSB MIA96IA084
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Nov-2015 20:35 | JINX | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 08:04 | ASN Update Bot | Updated [Time, Cn, Other fatalities, Phase, Nature, Departure airport, Destination airport, Source, Narrative, Accident report] |
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