A mooney MC20C owner operator advised the reporter that a cotter pin securing the throttle linkage w...

Attributes
ACN	413308
Time
Date	199809
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	M-20 B/C Ranger
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	Other
Function	other personnel
Qualification	other other : other
ASRS Report	413308
Person 2
Affiliation	Other
Function	other personnel
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure
Independent Detector	other other : unspecified cockpit
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At XA30 on sep/xy/98, owner/operator telephoned and stated his belief that during an annual inspection completed jun/yy/98 that a cotter pin securing the throttle linkage was left out resulting in loss of engine power control. Checklists and notes were reviewed and no conclusions could be drawn one way or another. When aircraft was brought to our facility it was in poor condition with several items that were very serious, including unauthorized major alterations performed by person or persons unknown. Callback conversation with reporter revealed the following information: the reporter stated the aircraft had been in service for 2 months when the owner operator reported the linkage problem. The reporter said it appears this owner operator is disgruntled over the annual repair bill and wants to recover a portion of the bill. The reporter said the engine was removed to repair a cracked motor mount and when reinstalled the throttle linkage was adjusted by the shop mechanic and then reinspected by the certified inspector. The reporter stated there is no separate signoff for the throttle linkage adjustment and operational check. The reporter said the FAA has made no contact with the reporter.

Original NASA ASRS Text

Title: A MOONEY MC20C OWNER OPERATOR ADVISED THE RPTR THAT A COTTER PIN SECURING THE THROTTLE LINKAGE WAS OMITTED DURING THE ANNUAL CHK AND CAUSED A LOSS OF PWR.

Narrative: AT XA30 ON SEP/XY/98, OWNER/OPERATOR TELEPHONED AND STATED HIS BELIEF THAT DURING AN ANNUAL INSPECTION COMPLETED JUN/YY/98 THAT A COTTER PIN SECURING THE THROTTLE LINKAGE WAS LEFT OUT RESULTING IN LOSS OF ENG PWR CTL. CHKLISTS AND NOTES WERE REVIEWED AND NO CONCLUSIONS COULD BE DRAWN ONE WAY OR ANOTHER. WHEN ACFT WAS BROUGHT TO OUR FACILITY IT WAS IN POOR CONDITION WITH SEVERAL ITEMS THAT WERE VERY SERIOUS, INCLUDING UNAUTH MAJOR ALTERATIONS PERFORMED BY PERSON OR PERSONS UNKNOWN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT HAD BEEN IN SVC FOR 2 MONTHS WHEN THE OWNER OPERATOR RPTED THE LINKAGE PROB. THE RPTR SAID IT APPEARS THIS OWNER OPERATOR IS DISGRUNTLED OVER THE ANNUAL REPAIR BILL AND WANTS TO RECOVER A PORTION OF THE BILL. THE RPTR SAID THE ENG WAS REMOVED TO REPAIR A CRACKED MOTOR MOUNT AND WHEN REINSTALLED THE THROTTLE LINKAGE WAS ADJUSTED BY THE SHOP MECH AND THEN REINSPECTED BY THE CERTIFIED INSPECTOR. THE RPTR STATED THERE IS NO SEPARATE SIGNOFF FOR THE THROTTLE LINKAGE ADJUSTMENT AND OPERATIONAL CHK. THE RPTR SAID THE FAA HAS MADE NO CONTACT WITH THE RPTR.

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.

A mooney MC20C owner operator advised the reporter that a cotter pin securing the throttle linkage was omitted during the annual check and caused a loss of power.