A wrong part was installed in an air carrier widebody transport.

Attributes
ACN	246748
Time
Date	199307
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Flight Phase	ground : preflight
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	246748
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure
Independent Detector	other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After landing rollout, #3 thrust reverser failed to stow. Aircraft taxied to gate and engines shut down with #3 still in reverse. Approximately 30 mins later, #3 was run and attempts were made to stow the reverser. The reverser finally stowed after resetting the thrust reverser automatic deceleration circuit breaker. It was decided to lock out and defer the reverser. I looked in the MEL for the proper method and notified system maintenance control and dispatch of the deferral. While making computer entries, I was told the lock had been installed on #3 reverser lever and I finished the entries and released the aircraft. It was close to pushback time as I delivered the logbook to the cockpit and explained the deferral to the crew. I also looked for the lock to be installed on #3 reverser and operated the throttle levers full forward and aft. I then exited and pushed the aircraft. Upon arrival, it was noticed the incorrect lock had been installed and there was concern that flight safety had been jeopardized. When the aircraft arrived back at sfo, I installed the same lock on #3 to check out the problem. The lock seemed to function ok, but the correct lock would have fit better. This was a good reminder to not only check for a part, but to check for the correct part.

Original NASA ASRS Text

Title: A WRONG PART WAS INSTALLED IN AN ACR WDB.

Narrative: AFTER LNDG ROLLOUT, #3 THRUST REVERSER FAILED TO STOW. ACFT TAXIED TO GATE AND ENGS SHUT DOWN WITH #3 STILL IN REVERSE. APPROX 30 MINS LATER, #3 WAS RUN AND ATTEMPTS WERE MADE TO STOW THE REVERSER. THE REVERSER FINALLY STOWED AFTER RESETTING THE THRUST REVERSER AUTO DECELERATION CIRCUIT BREAKER. IT WAS DECIDED TO LOCK OUT AND DEFER THE REVERSER. I LOOKED IN THE MEL FOR THE PROPER METHOD AND NOTIFIED SYS MAINT CTL AND DISPATCH OF THE DEFERRAL. WHILE MAKING COMPUTER ENTRIES, I WAS TOLD THE LOCK HAD BEEN INSTALLED ON #3 REVERSER LEVER AND I FINISHED THE ENTRIES AND RELEASED THE ACFT. IT WAS CLOSE TO PUSHBACK TIME AS I DELIVERED THE LOGBOOK TO THE COCKPIT AND EXPLAINED THE DEFERRAL TO THE CREW. I ALSO LOOKED FOR THE LOCK TO BE INSTALLED ON #3 REVERSER AND OPERATED THE THROTTLE LEVERS FULL FORWARD AND AFT. I THEN EXITED AND PUSHED THE ACFT. UPON ARR, IT WAS NOTICED THE INCORRECT LOCK HAD BEEN INSTALLED AND THERE WAS CONCERN THAT FLT SAFETY HAD BEEN JEOPARDIZED. WHEN THE ACFT ARRIVED BACK AT SFO, I INSTALLED THE SAME LOCK ON #3 TO CHK OUT THE PROB. THE LOCK SEEMED TO FUNCTION OK, BUT THE CORRECT LOCK WOULD HAVE FIT BETTER. THIS WAS A GOOD REMINDER TO NOT ONLY CHK FOR A PART, BUT TO CHK FOR THE CORRECT PART.

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.