A B737-700 technician reports possible failure to install 2 bolts and 2 washers on the horizontal stabilizer jackscrew fail safe lug. This report involved 3 aircraft.

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Attributes
ACN	718379
Time
Date	200611
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	718379
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	718376
Events
Anomaly	maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : work cards performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : installation performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance
Primary Problem	Maintenance Human Performance
Situations
Publication	Maint Manual Chap27

Narrative:

Due to recent stabilizer jackscrew installation it was determined that some jackscrews do not have 2 each bolts and 2 each washers installed in the jackscrew assembly per ipc items. I have changed 3 stabilizer jackscrews. Aircraft X tail numbers and I can't recall if the bolts and washers were installed in the jackscrew per the maintenance manual. I would like if we can inspect these 3 aircraft for proper installation of these bolts and washers in question.

Original NASA ASRS Text

Title: A B737-700 TECHNICIAN RPTS POSSIBLE FAILURE TO INSTALL 2 BOLTS AND 2 WASHERS ON THE HORIZ STABILIZER JACKSCREW FAIL SAFE LUG. THIS RPT INVOLVED 3 ACFT.

Narrative: DUE TO RECENT STABILIZER JACKSCREW INSTALLATION IT WAS DETERMINED THAT SOME JACKSCREWS DO NOT HAVE 2 EACH BOLTS AND 2 EACH WASHERS INSTALLED IN THE JACKSCREW ASSEMBLY PER IPC ITEMS. I HAVE CHANGED 3 STABILIZER JACKSCREWS. ACFT X TAIL NUMBERS AND I CAN'T RECALL IF THE BOLTS AND WASHERS WERE INSTALLED IN THE JACKSCREW PER THE MAINT MANUAL. I WOULD LIKE IF WE CAN INSPECT THESE 3 ACFT FOR PROPER INSTALLATION OF THESE BOLTS AND WASHERS IN QUESTION.

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.