ASN Wikibase Occurrence # 369276
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can
submit corrected information.
Date: | Friday 20 January 1989 |
Time: | 10:14 LT |
Type: | Dassault Falcon 900 |
Owner/operator: | Bristol-myers Co. |
Registration: | N901B |
MSN: | 024 |
Total airframe hrs: | 886 hours |
Engine model: | GARRETT TFE-731 |
Fatalities: | Fatalities: 0 / Occupants: 4 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | South Bend, IN -
United States of America
|
Phase: | Landing |
Nature: | Executive |
Departure airport: | Philadelphia, PA (PHL |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:THE PLTS RPRTD THAT WHILE LNDG ON A SNOW & SLUSH CVRD RWY, THEY USED FULL REVERSE THRUST & MAX BRAKING WITH ANTI-SKID, BUT THE ACFT DID NOT DECELERATE. THEY SELECTED THE #2 BRAKE SYS WITHOUT ANTI-SKID. SUBSEQUENTLY, THE MAIN TIRES FAILED (BLEW-OUT) & THE ACFT SLID OFF THE LEFT SIDE OF THE RWY, COLLAPSING THE LEFT MAIN GEAR. INV REVEALED THAT BOTH THRUST REVERSER ACTUATOR LINKS ON THE #2 ENG HAD FAILED. WITH THESE FAILURES THE #2 ENG WOULD HAVE CONTD TO PROVIDE FWD THRUST,PROPELLING THE ACFT DWN THE RWY. (ON THIS MODEL OF ACFT, ONLY THE #2 ENG WAS EQUIPPED WITH REVERSE THRUST CAPABILITY.) METALLURGICAL EXAMS OF THE FWD ROD END FITTINGS OF BOTH REVERSE THRUST ACTUATOR LINKS (P/N 8140-06LK) REVEALED THE BEARING LOOPS HAD FAILED FROM OVERSTRESS. MANDATORY SERVICE BULLETIN (S/B) F900-78-1 WAS ISSUED ON 5/18/89 TO PROVIDE A SAFETY SYSTEM TO PREVENT ACTIVATION OF THE THRUST REVERSER ABOVE IDLE, WHILE THE AIRCRAFT IS ON THE GROUND. ALSO, MANDATORY S/B F900-78-2 WAS ISSUED ON 7/19/89 TO REINFORCE THE THRUST REVERSER ACTUATING MECHANISMS.
Probable Cause: FAILURE OF THE THRUST REVERSER ACTUATOR LINKS DUE TO A MANUFACTURING/DESIGN PROBLEM. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE RUNWAY CONDITIONS AND THE CROSSWIND.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CHI89MA047 |
Status: | Investigation completed |
Duration: | 2 years and 5 months |
Download report: | Final report |
|
Sources:
NTSB CHI89MA047
Location
Revision history:
Date/time | Contributor | Updates |
24-Mar-2024 12:42 |
ASN Update Bot |
Added |
The Aviation Safety Network is an exclusive service provided by:
CONNECT WITH US:
©2024 Flight Safety Foundation