Accident Cessna 177RG N7554V, Saturday 23 June 1984

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Date:	Saturday 23 June 1984
Time:	13:30 LT
Type:	Cessna 177RG
Owner/operator:	Private
Registration:	N7554V
MSN:	177RG0850
Year of manufacture:	1976
Total airframe hrs:	691 hours
Engine model:	Lycoming IO-360-A1B6D
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Pell City, AL - United States of America
Phase:	Initial climb
Nature:	Private
Departure airport:	Pell City, AL (KPLR)
Destination airport:	Pell City, AL (KPLR)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING THE TAKEOFF SEQUENCE, THE ALTERNATE AIR DOOR HINGE FAILED, ALLOWING THE DOOR TO SEPARATE AND PROGRESSIVELY BLOCK THE INDUCTION AIR SYSTEM TO THE POINT THAT INSUFFICIENT POWER WAS AVAILABLE TO SUSTAIN FURTHER FLIGHT. A FORCED LANDING WAS EFFECTED IN A COW PASTURE. THE ALTERNATE AIR DOOR IS NOT ACCESSIBLE FOR CONDITION INSPECTION UNDER ROUTINE PREFLIGHT PROCEDURES (COWLING REMOVAL REQUIRED).

Probable Cause:

Accident investigation: