ASN Wikibase Occurrence # 361178
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| Date: | Friday 8 October 1993 |
| Time: | 16:00 LT |
| Type: |  Cessna 172M |
| Owner/operator: | Pavco Flight Center |
| Registration: | N9932Q |
| MSN: | 17265876 |
| Total airframe hrs: | 2309 hours |
| Engine model: | LYCOMING O-320-E2D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Longbranch, WA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Tacoma, WA (KTIW) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A PRE-RENT CHECKOUT FLIGHT, THE FLIGHT INSTRUCTOR PULLED THE THROTTLE TO IDLE TO SIMULATE A LOSS OF POWER. CARB HEAT WAS APPLIED DURING THE DESCENT, AND ONCE DURING THE MANEUVER THE INSTRUCTOR 'CLEARED THE THROTTLE.' WHEN POWER WAS APPLIED FOR A GO-AROUND NEAR THE END OF THE SIMULATED MANEUVER, AN ALMOST COMPLETE LOSS OF POWER WAS EXPERIENCED. A FORCED LANDING WAS THEN ATTEMPTED IN A NEARBY FIELD, AND THE AIRCRAFT FLIPPED OVER AFTER THE NOSE GEAR BROKE OFF IN THE SOFT TERRAIN. ACCORDING TO THE CARBURETOR ICING PROBABILITY CHART (DOT/FAA/CT-82/44) THE AIRCRAFT WAS BEING OPERATED IN AN ENVIRONMENT WHERE SERIOUS ICING MAY BE EXPECTED TO OCCUR AT GLIDE POWER. THE ONE APPLICATION OF POWER DURING THE DESCENT WAS NOT SUFFICIENT TO ENSURE ICE DID NOT FORM IN THE CABURETOR THROAT.
Probable Cause: THE INSTRUCTOR PILOT'S FAILURE TO FOLLOW PROCEDURES. FACTORS INCLUDE CARBURETOR ICING CONDITIONS AND SOFT TERRAIN IN THE LANDING AREA.
Accident investigation:
 |
|
Sources:
NTSB SEA94LA011
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 15:38 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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