<< >> NASA ASRS Report 693142, April 2006

A B737-400 returned to the departure airport due to flap problems. A rag was found in the right wing outboard flap transmission jackscrew.

Attributes
ACN	693142
Time
Date	200604
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	693142
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	aircraft equipment other aircraft equipment : flap position indicator other flight crewa other flight crewb
Resolutory Action	other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : lighting performance deficiency : scheduled maintenance performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : inspection
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

On the evening of mon/apr/06 I was assigned to perform the following task cards on gear lube work cards and service check work cards. I completed these work cards as required. On the morning of apr/tue/06; aircraft X did an air turn-back for a flight control issue. When the aircraft return to station; a rag was discovered on the r-hand wing outboard flap transmission jackscrew. Being I was involved with the overnight maintenance of this aircraft; I am reporting this for the reason that I was not involved with the accomplishment of the flap lube work cards mentioned above.

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Original NASA ASRS Text

Title: A B737-400 RETURNED TO THE DEP ARPT DUE TO FLAP PROBS. A RAG WAS FOUND IN THE R WING OUTBOARD FLAP XMISSION JACKSCREW.

Narrative: ON THE EVENING OF MON/APR/06 I WAS ASSIGNED TO PERFORM THE FOLLOWING TASK CARDS ON GEAR LUBE WORK CARDS AND SVC CHK WORK CARDS. I COMPLETED THESE WORK CARDS AS REQUIRED. ON THE MORNING OF APR/TUE/06; ACFT X DID AN AIR TURN-BACK FOR A FLT CTL ISSUE. WHEN THE ACFT RETURN TO STATION; A RAG WAS DISCOVERED ON THE R-HAND WING OUTBOARD FLAP XMISSION JACKSCREW. BEING I WAS INVOLVED WITH THE OVERNIGHT MAINT OF THIS ACFT; I AM RPTING THIS FOR THE REASON THAT I WAS NOT INVOLVED WITH THE ACCOMPLISHMENT OF THE FLAP LUBE WORK CARDS MENTIONED ABOVE.

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.