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| Date: | Thursday 27 July 2006 |
| Time: | 08:45 LT |
| Type: |  Boeing 737-3B7 |
| Owner/operator: | US Airways |
| Registration: | N529AU |
| MSN: | 24411/1713 |
| Year of manufacture: | 1989 |
| Engine model: | CFM International |
| Fatalities: | Fatalities: 0 / Occupants: 78 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Pittsburgh, Pennsylvania -
 United States of America
|
| Phase: | Unknown |
| Nature: | Passenger - Scheduled |
| Departure airport: | Pittsburgh International Airport, PA (PIT/KPIT) |
| WEST PALM BEACH, FL (PBI | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During pushback, the airplane was seen to "bounce" up and down both at the nose and the tail, before the nose gear collapsed. Examination of the airplane revealed a broken lower drag brace that was buckled in compression, and fractured due to overstress. The tug was examined and the gear shift lever was found to be defective. It would not lock in the neutral gate, and could be moved easily through the gate between the forward and reverse gears. In addition, the tug experienced "hesitation and hard jerks" when shifting from forward to reverse. Skid marks at the scene were the same width as the tug's wheelbase, and were consistent with sudden engagement of the transmission.
Probable Cause: The airplane tug driver's inadvertent movement of the tug gear shift lever from forward to reverse, which resulted in the nose landing gear collapse. Contributing to the accident was the defective gear shift lever.
Accident investigation:
 |
|
Sources:
NTSB NYC06FA184
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-Oct-2022 13:22 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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