<< >> NASA ASRS Report 432304, March 1999

Radomes for boeing aircraft models B727, B737, B757, and B767 are being repaired improperly and not in accordance with the manufacturer's drawings and specifications.

Attributes
ACN	432304
Time
Date	199903
Day	Tue
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
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : repairman
Experience	maintenance repairman : 9
ASRS Report	432304
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : repairman
Experience	maintenance repairman : 19
ASRS Report	432305
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	other other : mech 1
Resolutory Action	none taken : detected after the fact
Consequence	other other Other
Factors
Maintenance	contributing factor : tooling contributing factor : engineering procedure performance deficiency : training performance deficiency : repair performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Company Chart Or Publication
Primary Problem	Company

Narrative:

As a mechanic for air carrier repairing radomes for aircraft fleet types B727, B737, B757, B767, I recently discovered that the repair process and materials being used are not in accordance to manufacturer's drawings and specifications. The repair process and materials used via air carrier approved OJT (including molds, templates, materials, and procedure used) conflicts with the manufacturer's recommended method of repair. Air carrier management was immediately notified of the discrepancies involving said repairs and is now currently out of the radome repair field. However, as one of the many mechanics involved in repairing radomes for air carrier fleet of said aircraft, I strongly feel that air carrier method of OJT (using incorrect tooling, materials, and process) was the cause of this problem. Current and future OJT provided by air carrier should include a more active role from air carrier engineering department and management so as to better document an approved repair procedure.

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Original NASA ASRS Text

Title: RADOMES FOR BOEING ACFT MODELS B727, B737, B757, AND B767 ARE BEING REPAIRED IMPROPERLY AND NOT IN ACCORDANCE WITH THE MANUFACTURER'S DRAWINGS AND SPECS.

Narrative: AS A MECH FOR ACR REPAIRING RADOMES FOR ACFT FLEET TYPES B727, B737, B757, B767, I RECENTLY DISCOVERED THAT THE REPAIR PROCESS AND MATERIALS BEING USED ARE NOT IN ACCORDANCE TO MANUFACTURER'S DRAWINGS AND SPECS. THE REPAIR PROCESS AND MATERIALS USED VIA ACR APPROVED OJT (INCLUDING MOLDS, TEMPLATES, MATERIALS, AND PROC USED) CONFLICTS WITH THE MANUFACTURER'S RECOMMENDED METHOD OF REPAIR. ACR MGMNT WAS IMMEDIATELY NOTIFIED OF THE DISCREPANCIES INVOLVING SAID REPAIRS AND IS NOW CURRENTLY OUT OF THE RADOME REPAIR FIELD. HOWEVER, AS ONE OF THE MANY MECHS INVOLVED IN REPAIRING RADOMES FOR ACR FLEET OF SAID ACFT, I STRONGLY FEEL THAT ACR METHOD OF OJT (USING INCORRECT TOOLING, MATERIALS, AND PROCESS) WAS THE CAUSE OF THIS PROB. CURRENT AND FUTURE OJT PROVIDED BY ACR SHOULD INCLUDE A MORE ACTIVE ROLE FROM ACR ENGINEERING DEPT AND MGMNT SO AS TO BETTER DOCUMENT AN APPROVED REPAIR PROC.

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.