A B737-300 was dispatched in non compliance with a wing body attach angle with loose rivets and leaking fuel deferred in conflict with the maintenance manual.

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Attributes
ACN	493056
Time
Date	200011
Day	Fri
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	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other oversight : supervisor
Qualification	technician : powerplant technician : airframe technician : inspection authority
Experience	maintenance technician : 22
ASRS Report	493056
Person 2
Affiliation	company : air carrier
Qualification	technician : powerplant technician : airframe
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	other other : person 4
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals performance deficiency : fault isolation performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : training
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

As a new maintenance controller, I authorized a maintenance deferral on a wing to body skate angle rivets seeping fuel. This was done over the telephone with the mechanic working the aircraft in XXX. After discussing the condition with the mechanic and referencing maintenance manual 28-11-00 page 602, it was determined that the condition was deferrable with rechks each 50 hours of flight. The proper procedures were followed and the aircraft returned to service. During routine checks by our maintenance planning staff, a question came up regarding the time limit at which time permanent repairs would be made. After consulting with a more experienced controller, it was discovered that another maintenance manual reference applied in this condition. Maintenance manual 57-42-99 page 201 mandates that loose fasteners are permitted in this area provided no fuel leaks. Fuel leaks must be corrected prior to further flts. The on-site mechanic and myself failed to reference this procedure and therefore improperly allowed this deferral.

Original NASA ASRS Text

Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH A WING BODY ATTACH ANGLE WITH LOOSE RIVETS AND LEAKING FUEL DEFERRED IN CONFLICT WITH THE MAINT MANUAL.

Narrative: AS A NEW MAINT CTLR, I AUTHORIZED A MAINT DEFERRAL ON A WING TO BODY SKATE ANGLE RIVETS SEEPING FUEL. THIS WAS DONE OVER THE TELEPHONE WITH THE MECH WORKING THE ACFT IN XXX. AFTER DISCUSSING THE CONDITION WITH THE MECH AND REFING MAINT MANUAL 28-11-00 PAGE 602, IT WAS DETERMINED THAT THE CONDITION WAS DEFERRABLE WITH RECHKS EACH 50 HRS OF FLT. THE PROPER PROCS WERE FOLLOWED AND THE ACFT RETURNED TO SVC. DURING ROUTINE CHKS BY OUR MAINT PLANNING STAFF, A QUESTION CAME UP REGARDING THE TIME LIMIT AT WHICH TIME PERMANENT REPAIRS WOULD BE MADE. AFTER CONSULTING WITH A MORE EXPERIENCED CTLR, IT WAS DISCOVERED THAT ANOTHER MAINT MANUAL REF APPLIED IN THIS CONDITION. MAINT MANUAL 57-42-99 PAGE 201 MANDATES THAT LOOSE FASTENERS ARE PERMITTED IN THIS AREA PROVIDED NO FUEL LEAKS. FUEL LEAKS MUST BE CORRECTED PRIOR TO FURTHER FLTS. THE ON-SITE MECH AND MYSELF FAILED TO REF THIS PROC AND THEREFORE IMPROPERLY ALLOWED THIS DEFERRAL.

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.