A B727-200 was dispatched in non compliance with an unauthorized repair accomplished to the inboard ...

Attributes
ACN	446839
Time
Date	199907
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	B727-200
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Experience	maintenance technician : 10
ASRS Report	446839
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : testing
Supplementary
Problem Areas	Maintenance Human Performance Company Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Picked up from previous shift. Previous shift turned over they had found a leak at the outboard torque tube drive shaft at the inboard flap transmission. Previous shift had already removed drive shaft and replaced the o-ring. The assembly was reinstalled and failed a static leak check. I proceeded to remove the assembly and found the o-ring cut. I referenced the aircraft ipc and located the manufacturer's part number for the o-ring. Installed new o-ring. Reinstalled drive shaft assembly. Svced transmission. Transmission passed the static leak check and operational leak check. Aircraft was returned to service.

Original NASA ASRS Text

Title: A B727-200 WAS DISPATCHED IN NON COMPLIANCE WITH AN UNAUTH REPAIR ACCOMPLISHED TO THE INBOARD FLAP TRANSMISSION.

Narrative: PICKED UP FROM PREVIOUS SHIFT. PREVIOUS SHIFT TURNED OVER THEY HAD FOUND A LEAK AT THE OUTBOARD TORQUE TUBE DRIVE SHAFT AT THE INBOARD FLAP TRANSMISSION. PREVIOUS SHIFT HAD ALREADY REMOVED DRIVE SHAFT AND REPLACED THE O-RING. THE ASSEMBLY WAS REINSTALLED AND FAILED A STATIC LEAK CHK. I PROCEEDED TO REMOVE THE ASSEMBLY AND FOUND THE O-RING CUT. I REFED THE ACFT IPC AND LOCATED THE MANUFACTURER'S PART NUMBER FOR THE O-RING. INSTALLED NEW O-RING. REINSTALLED DRIVE SHAFT ASSEMBLY. SVCED TRANSMISSION. TRANSMISSION PASSED THE STATIC LEAK CHK AND OPERATIONAL LEAK CHK. ACFT WAS RETURNED TO SVC.

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.

A B727-200 was dispatched in non compliance with an unauthorized repair accomplished to the inboard flap transmission.