ASN Wikibase Occurrence # 356235
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: | Thursday 20 February 1997 |
| Time: | 11:27 LT |
| Type: |  de Havilland Canada DHC-8-102 |
| Owner/operator: | Mesaba Airlines |
| Registration: | N828MA |
| MSN: | 333 |
| Total airframe hrs: | 10466 hours |
| Engine model: | P&W PW120A |
| Fatalities: | Fatalities: 0 / Occupants: 26 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Romulus, MI -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | (KDTW) |
| Knoxville, TN (KTYS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The captain said that after departure, 'the first officer needed excessive right wing down trim to maintain a wings level attitude. The left outboard roll spoiler indicated approximately one-half deployment on the PFCS (Powered Flight Controlled Surfaces).' The crew maintained control of the airplane with trim and control wheel input. The crew declared an emergency, returned to the airport, and landed the airplane without further incident. A postincident inspection revealed that the left outboard roll spoiler was 'deployed approximately half-way.' An examination and disassembly of the roll spoiler servoactuator revealed that a plug (PN A50993-1), which had been fusion-welded into the base of the piston (PN A50992-1), had separated and lodged itself between the base of the piston and the shims, restricting the piston's movement. Dowty Aerospace (the manufacturer) had recorded seven previous failures of fusion welds in pistons on DHC-8 roll spoiler servoactuators before this incident.
Probable Cause: a fractured fusion weld in the piston of the roll spoiler servoactuator, which allowed the plug at the base of the piston to separate and jam the piston. A factor relating to the incident was: the inadequate design of the airplane's roll spoiler servoactuator piston.
Accident investigation:
 |
|
Sources:
NTSB CHI97IA073
History of this aircraft
Other occurrences involving this aircraft
| 3 April 1995 | N828MA | Mesaba Aviation | 0 | Moline, IL | |
non |
| 14 October 2002 | N847EX | Allegheny Airlines | 0 | Albany Airport, NY (ALB/KALB) | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 20:25 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation