ASN Wikibase Occurrence # 379519
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| Date: | Tuesday 15 May 1984 |
| Time: | 14:10 LT |
| Type: |  de Havilland Canada DHC-7-102 |
| Owner/operator: | Air Wisconsin, Inc. |
| Registration: | N708ZW |
| MSN: | 061 |
| Engine model: | P&W PT6A-50 |
| Fatalities: | Fatalities: 0 / Occupants: 25 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Battle Creek, MI -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Muskegon, MI (KMKG) |
| Battle Creek, MI (KBTL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE CRUISING AT 7000 FT MSL, THE 1ST OFFICER WAS TRIMMING THE RUDDER, USING THE ROTARY SWITCH ON THE CENTER CONSOLE, WHEN HE FELT A 'SNAP' INSIDE THE SWITCH. AFTER THAT, THE SWITCH WOULD ROTATE FREELY BETWEEN THE STOPS. THE ACFT BEGAN YAWING LEFT & RIGHT UNTIL THE CREW PULLED THE APPROPRIATE CIRCUIT BREAKER TO DISABLE THE RUDDER TRIM. SUBSEQUENTLY, THEY LANDED WITH FULL RIGHT RUDDER TRIM. AN EXAM REVEALED THAT A CENTERING SPRING, P/N 42M4231137, WHICH LOADS THE SWITCH TO THE NEUTRAL/OFF POSITION HAD FAILED AT A FATIGUE CRACK.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB CHI84IA197
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 06:41 | ASN Update Bot | Added |
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