A piper PA28 was operated for a few yrs in non compliance with the incorrect crankshaft installed. Aircraft purchased recently with annual inspection performed.

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Attributes
ACN	611488
Time
Date	200401
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	ground : maintenance ground : parked
Person 1
Affiliation	other
Function	flight crew : single pilot other personnel other
Experience	flight time last 90 days : 23 flight time total : 490 flight time type : 490
ASRS Report	611488
Person 2
Affiliation	other
Function	maintenance : inspector
Qualification	technician : inspection authority
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : person 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : inspection
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication Flight Crew Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I purchased the aircraft and did not realize that the incorrect crankshaft had been installed. Had the annual inspection performed by a&P, ia, and signed off as airworthy before I took possession of the airplane. After flying several occasions (without incident), I found in the engine logbook that the engine had the wrong crankshaft installed a few yrs ago. The entry in the logbook had been made, but diligence in examining the exact wording would have prevented the airplane from being operated until the engine was in compliance. As the owner/operator, it is ultimately my responsibility to know the airworthiness of the aircraft, and I will always be clear on any log entries in the future.

Original NASA ASRS Text

Title: A PIPER PA28 WAS OPERATED FOR A FEW YRS IN NON COMPLIANCE WITH THE INCORRECT CRANKSHAFT INSTALLED. ACFT PURCHASED RECENTLY WITH ANNUAL INSPECTION PERFORMED.

Narrative: I PURCHASED THE ACFT AND DID NOT REALIZE THAT THE INCORRECT CRANKSHAFT HAD BEEN INSTALLED. HAD THE ANNUAL INSPECTION PERFORMED BY A&P, IA, AND SIGNED OFF AS AIRWORTHY BEFORE I TOOK POSSESSION OF THE AIRPLANE. AFTER FLYING SEVERAL OCCASIONS (WITHOUT INCIDENT), I FOUND IN THE ENG LOGBOOK THAT THE ENG HAD THE WRONG CRANKSHAFT INSTALLED A FEW YRS AGO. THE ENTRY IN THE LOGBOOK HAD BEEN MADE, BUT DILIGENCE IN EXAMINING THE EXACT WORDING WOULD HAVE PREVENTED THE AIRPLANE FROM BEING OPERATED UNTIL THE ENG WAS IN COMPLIANCE. AS THE OWNER/OPERATOR, IT IS ULTIMATELY MY RESPONSIBILITY TO KNOW THE AIRWORTHINESS OF THE ACFT, AND I WILL ALWAYS BE CLR ON ANY LOG ENTRIES IN THE FUTURE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.