19951026047959A

Accident · Substantial damage

FAA accident report · Cessna 180A · Goose Lake, IA · October 26, 1995

Date
October 26, 1995 · 19:23 local
Place
Goose Lake, IA
Phase of flight
Fcd/Prec Ldg From Cruise
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N185F
NTSB investigation
NTSBCHI96LA020
Reported as
Cessna 180A
Reported engine
Continental O470K
People aboard
1
Fatal injuries
0
Pilot’s flight hours
13,750 total

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Pilot radio needed closest arpt, closest was 15 miles, couldn't make it, landed in combine field and flipped over. (.4)the pilot/owner was flying an airplane that had recently undergone a complete overhaul of the engine and replacement of the right fuel tank bladder. After being en route for about 1 hour and 50 minutes, the engine stopped running with no warning. During a subsequent forced landing in a corn field, the airplane nosed over and was damaged. Inspection of the airplane revealed a wrinkled right bladder fuel tank and a fuel stain aft of the left fuel cap. Very little fuel was found onboard. Four gallons of fuel was added to the left tank and the engine ran successfully. The airplane had been modified with supplemental type certificate (STC) SA4121SW. However, there was no maintenance entry in the airplane's logbook regarding the maintenance performed to comply with all conditions of the STC. Cessna service bulletin (sb) SEB88-1 was applicable to the STC. An instruction of the sb was ' . . . To add a strip of foam seal around the wing strut under the upper strut cuff. This sealing prevents air flowing inside the cuff and disruption of p roper fuel venting due to vortex generation forward of the vent tube..". The sb also noted that excessive gaps between the wing strap and strut cuff could cause fuel bladder tank wrinkling, unsnapping, and inaccurate fuel quantity indications.

As the FAA filed it

PILOT RADIO NEEDED CLOSEST ARPT, CLOSEST WAS 15 MILES, COULDN'T MAKE IT, LANDED IN COMBINE FIELD AND FLIPPED OVER. (.4)THE PILOT/OWNER WAS FLYING AN AIRPLANE THAT HAD RECENTLY UNDERGONE A COMPLETE OVERHAUL OF THE ENGINE AND REPLACEMENT OF THE RIGHT FUEL TANK BLADDER. AFTER BEING EN ROUTE FOR ABOUT 1 HOUR AND 50 MINUTES, THE ENGINE STOPPED RUNNING WITH NO WARNING. DURING A SUBSEQUENT FORCED LANDING IN A CORN FIELD, THE AIRPLANE NOSED OVER AND WAS DAMAGED. INSPECTION OF THE AIRPLANE REVEALED A WRINKLED RIGHT BLADDER FUEL TANK AND A FUEL STAIN AFT OF THE LEFT FUEL CAP. VERY LITTLE FUEL WAS FOUND ONBOARD. FOUR GALLONS OF FUEL WAS ADDED TO THE LEFT TANK AND THE ENGINE RAN SUCCESSFULLY. THE AIRPLANE HAD BEEN MODIFIED WITH SUPPLEMENTAL TYPE CERTIFICATE (STC) SA4121SW. HOWEVER, THERE WAS NO MAINTENANCE ENTRY IN THE AIRPLANE'S LOGBOOK REGARDING THE MAINTENANCE PERFORMED TO COMPLY WITH ALL CONDITIONS OF THE STC. CESSNA SERVICE BULLETIN (SB) SEB88-1 WAS APPLICABLE TO THE STC. AN INSTRUCTION OF THE SB WAS ' . . . TO ADD A STRIP OF FOAM SEAL AROUND THE WING STRUT UNDER THE UPPER STRUT CUFF. THIS SEALING PREVENTS AIR FLOWING INSIDE THE CUFF AND DISRUPTION OF P ROPER FUEL VENTING DUE TO VORTEX GENERATION FORWARD OF THE VENT TUBE..". THE SB ALSO NOTED THAT EXCESSIVE GAPS BETWEEN THE WING STRAP AND STRUT CUFF COULD CAUSE FUEL BLADDER TANK WRINKLING, UNSNAPPING, AND INACCURATE FUEL QUANTITY INDICATIONS.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.