<< >> NASA ASRS Report 654578, April 2005

An MD90 was dispatched with the #1 thrust reverser deactivated. Lockout pin installed for service check and not removed. No reversing on landing.

Attributes
ACN	654578
Time
Date	200504
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-90 Series (DC-9-90) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 17
ASRS Report	654578
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : #1 rev position indication other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : inspection performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : testing performance deficiency : training
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Did not reactivate #1 engine thrust reverser after completion of service check. Aircraft was turned over from second shift before I arrived. After completing remaining #1 engine open items; another amt helped me close thrust reverser and engine cowling. I performed a walkaround check of all cowling and panels for security on engine. Went upstairs and signed open items. While signing off paperwork; decided to verify thrust reversers were deactivated because I had not closed that panel. Got distraction with another open item on aircraft and neglected to rechk thrust reverser; which was an error in judgement.

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Original NASA ASRS Text

Title: AN MD90 WAS DISPATCHED WITH THE #1 THRUST REVERSER DEACTIVATED. LOCKOUT PIN INSTALLED FOR SVC CHK AND NOT REMOVED. NO REVERSING ON LNDG.

Narrative: DID NOT REACTIVATE #1 ENG THRUST REVERSER AFTER COMPLETION OF SVC CHK. ACFT WAS TURNED OVER FROM SECOND SHIFT BEFORE I ARRIVED. AFTER COMPLETING REMAINING #1 ENG OPEN ITEMS; ANOTHER AMT HELPED ME CLOSE THRUST REVERSER AND ENG COWLING. I PERFORMED A WALKAROUND CHK OF ALL COWLING AND PANELS FOR SECURITY ON ENG. WENT UPSTAIRS AND SIGNED OPEN ITEMS. WHILE SIGNING OFF PAPERWORK; DECIDED TO VERIFY THRUST REVERSERS WERE DEACTIVATED BECAUSE I HAD NOT CLOSED THAT PANEL. GOT DISTR WITH ANOTHER OPEN ITEM ON ACFT AND NEGLECTED TO RECHK THRUST REVERSER; WHICH WAS AN ERROR IN JUDGEMENT.

Data retrieved from NASA's ASRS site as of January 2009 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.