<< >> NASA ASRS Report 623193, July 2004

A B737-300 in-flight a passenger noted a left inboard pylon access panel had departed the aircraft. Left inboard thrust reverser replaced prior to flight.

Attributes
ACN	623193
Time
Date	200407
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : luk.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : powerplant technician : fcc technician : airframe
Experience	maintenance lead technician : 16 maintenance technician : 26
ASRS Report	623193
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : 969
Consequence	other other
Factors
Maintenance	performance deficiency : inspection performance deficiency : installation performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

A left engine inboard thrust reverser was being replaced on a B737-300 aircraft. I was on the last shift of the job for close-up of cowlings and paperwork. A final inspection was performed, all items intact and svcable. On the subsequent flight outbound, a passenger noticed a small pylon panel leaving the aircraft. This has happened in the past. Perhaps a better securing system is necessary.

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Original NASA ASRS Text

Title: A B737-300 INFLT A PAX NOTED A L INBOARD PYLON ACCESS PANEL HAD DEPARTED THE ACFT. L INBOARD THRUST REVERSER REPLACED PRIOR TO FLT.

Narrative: A L ENG INBOARD THRUST REVERSER WAS BEING REPLACED ON A B737-300 ACFT. I WAS ON THE LAST SHIFT OF THE JOB FOR CLOSE-UP OF COWLINGS AND PAPERWORK. A FINAL INSPECTION WAS PERFORMED, ALL ITEMS INTACT AND SVCABLE. ON THE SUBSEQUENT FLT OUTBOUND, A PAX NOTICED A SMALL PYLON PANEL LEAVING THE ACFT. THIS HAS HAPPENED IN THE PAST. PERHAPS A BETTER SECURING SYS IS NECESSARY.

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.