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| Date: | Wednesday 27 December 2000 |
| Time: | 20:33 LT |
| Type: |  McDonnell Douglas DC-9-51 |
| Owner/operator: | Northwest Airlines |
| Registration: | N769NC |
| MSN: | 47757/877 |
| Year of manufacture: | 1978 |
| Engine model: | P&W JT8D-17 |
| Fatalities: | Fatalities: 0 / Occupants: 27 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | New York-John F. Kennedy International Airport, NY (JFK/KJFK) -
 United States of America
|
| Phase: | Take off |
| Nature: | Passenger - Scheduled |
| Departure airport: | New York-John F. Kennedy International Airport, NY (JFK/KJFK) |
| Detroit, MI (DTW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the takeoff roll, the flight crew heard a "bang;" however, the pilot continued the takeoff and began a climb. The flightcrew was unable to pressurize the passenger cabin, and elected to divert the flight to another airport, where the airplane landed uneventfully. Inspection of the airplane revealed a gash about 3 feet long, by 1 foot wide on the underside of the fuselage, aft of the passenger entry door, and damage to the right nose gear tire. Inspection of the runway at the departure airport revealed an in-ground light cover, that weighted about 100 pounds, was separated from its mount, broken in two pieces, and lying on the runway. Black marks, consistent in color and texture to rubber, and resembling a tire tread, were observed on the optical lighting well, and on the underside of the light fixture. The light cover was part of an in-ground, semi-flush mounted approach lighting fixture installed at the approach end of the runway in 1997. The lighting system had not been commissioned as of the date of the accident due to lack of certification from the FAA. Examination of the light fixture revealed that the six bolts, which were utilized to attach the lighting assembly to the in-ground base, were sheared. The fracture surfaces on the bolts were smeared, consistent with low cycle fatigue fractures that occur over a period of time. The bolts were located on the underside of the fixture, and to inspect them, required removal of the fixture cover. Repairs and inspections of runway lighting facilities at the airport were conducted at varied intervals; however, due to the lack of being commissioned, the in-ground, semi-flush mounted approach lighting fixtures installed at the approach end of the runway were only visually inspected. The runway was inspected for debris and general condition on a daily basis, or on a Duty Manager shift change, in accordance with 14 CFR Part 139.
Probable Cause: The low cycle fatigue fracturing of the approach lighting cover securing bolts.
Accident investigation:
 |
|
Sources:
NTSB NYC01FA062
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2021 12:14 | ASN Update Bot | Added |
| 15-Oct-2021 12:16 | harro | Updated [Operator, Other fatalities, Location, Phase, Nature, Departure airport, Narrative] |
Corrections or additions? ... Edit this accident description
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