A B737-300 had a right engine strut access panel fastener missing. Item deferred with incorrect reference and procedures. Panel departed aircraft in-flight.

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Attributes
ACN	657909
Time
Date	200505
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 25
ASRS Report	657909
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : inspection performance deficiency : repair performance deficiency : non compliance with legal requirements performance deficiency : logbook entry
Supplementary
Problem Areas	Aircraft Chart Or Publication Environmental Factor Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On sat/may/05; I was the upgrade lead. At shift change; I was informed that aircraft X had a fastener missing from the strut access panel above #2 engine. The previous shift mechanic told me that he had secured the panel and taped over the hole for the missing fastener per our procedures. I was asked to do the carry forward on the item. I did so using the maintenance procedures reference. I later learned that the panel was found missing with the arrival of aircraft X in ZZZ1. I researched the srm for the missing fastener requirements and believe I should have used the repair manual as my carry forward reference.

Original NASA ASRS Text

Title: A B737-300 HAD A R ENG STRUT ACCESS PANEL FASTENER MISSING. ITEM DEFERRED WITH INCORRECT REF AND PROCS. PANEL DEPARTED ACFT INFLT.

Narrative: ON SAT/MAY/05; I WAS THE UPGRADE LEAD. AT SHIFT CHANGE; I WAS INFORMED THAT ACFT X HAD A FASTENER MISSING FROM THE STRUT ACCESS PANEL ABOVE #2 ENG. THE PREVIOUS SHIFT MECH TOLD ME THAT HE HAD SECURED THE PANEL AND TAPED OVER THE HOLE FOR THE MISSING FASTENER PER OUR PROCS. I WAS ASKED TO DO THE CARRY FORWARD ON THE ITEM. I DID SO USING THE MAINT PROCS REF. I LATER LEARNED THAT THE PANEL WAS FOUND MISSING WITH THE ARR OF ACFT X IN ZZZ1. I RESEARCHED THE SRM FOR THE MISSING FASTENER REQUIREMENTS AND BELIEVE I SHOULD HAVE USED THE REPAIR MANUAL AS MY CARRY FORWARD REF.

Data retrieved from NASA's ASRS site as of January 2009 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.