A beech BE95 was operated in non compliance with an airworthiness directive for 10 months.

Attributes
ACN	541798
Time
Date	200105
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Travelair 95
Operating Under FAR Part	Part 91
Flight Phase	ground : maintenance
Person 1
Affiliation	company : corporate
Function	maintenance : inspector
Qualification	technician : powerplant technician : inspection authority technician : airframe
Experience	maintenance technician : 16
ASRS Report	541798
Person 2
Affiliation	company : corporate
Function	oversight : supervisor
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : person 2
Resolutory Action	none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : logbook entry performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Aircraft Chart Or Publication Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

During routine maintenance in may/01, annual inspection, the oil pump airworthiness directive 96-09-10 was not performed on the right engine. The previous compliance statement was unclr as to whether the airworthiness directive had been complied with. According to paperwork, the oil pump was in compliance with airworthiness directive 81-18-04, but did not state as to whether it had the steel gears installed. I missed the paragraph about all aluminum gears having to be removed prior to jul/01, which resulted in the engine being operated after that date with the aluminum gear installed. Another mechanic, the one that used to do maintenance on this aircraft, brought the oversight to the owner's attention, who in turn brought it to my attention. The correct oil pump parts are now being installed, and no accident or incident ever occurred.

Original NASA ASRS Text

Title: A BEECH BE95 WAS OPERATED IN NON COMPLIANCE WITH AN AIRWORTHINESS DIRECTIVE FOR 10 MONTHS.

Narrative: DURING ROUTINE MAINT IN MAY/01, ANNUAL INSPECTION, THE OIL PUMP AIRWORTHINESS DIRECTIVE 96-09-10 WAS NOT PERFORMED ON THE R ENG. THE PREVIOUS COMPLIANCE STATEMENT WAS UNCLR AS TO WHETHER THE AIRWORTHINESS DIRECTIVE HAD BEEN COMPLIED WITH. ACCORDING TO PAPERWORK, THE OIL PUMP WAS IN COMPLIANCE WITH AIRWORTHINESS DIRECTIVE 81-18-04, BUT DID NOT STATE AS TO WHETHER IT HAD THE STEEL GEARS INSTALLED. I MISSED THE PARAGRAPH ABOUT ALL ALUMINUM GEARS HAVING TO BE REMOVED PRIOR TO JUL/01, WHICH RESULTED IN THE ENG BEING OPERATED AFTER THAT DATE WITH THE ALUMINUM GEAR INSTALLED. ANOTHER MECH, THE ONE THAT USED TO DO MAINT ON THIS ACFT, BROUGHT THE OVERSIGHT TO THE OWNER'S ATTN, WHO IN TURN BROUGHT IT TO MY ATTN. THE CORRECT OIL PUMP PARTS ARE NOW BEING INSTALLED, AND NO ACCIDENT OR INCIDENT EVER OCCURRED.

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.