<< >> NASA ASRS Report 411363, August 1998

A B737-400 was returned to service with 1 incorrect log item deferral that involved 2 system flight director and the autoplt.

Attributes
ACN	411363
Time
Date	199808
Day	Tue
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	411363
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 non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During a routine write-up in the maintenance logbook, 'a' autoplt and a flight director were written up as defective. Under direction and instructions from air carrier maintenance control, I improperly installed MEL 34-36B. The tech was xyz JJJ and the MEL's should have been an MEL for autoplt (CH22) and flight director (CH34). I should have written an MEL for both problems but instead referenced a previous page with the wrong MEL number. The error was aggravated by the pilots not knowing what system were working and air carrier maintenance control not giving me proper guidance on the problem. B737-400.

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Original NASA ASRS Text

Title: A B737-400 WAS RETURNED TO SVC WITH 1 INCORRECT LOG ITEM DEFERRAL THAT INVOLVED 2 SYS FLT DIRECTOR AND THE AUTOPLT.

Narrative: DURING A ROUTINE WRITE-UP IN THE MAINT LOGBOOK, 'A' AUTOPLT AND A FLT DIRECTOR WERE WRITTEN UP AS DEFECTIVE. UNDER DIRECTION AND INSTRUCTIONS FROM ACR MAINT CTL, I IMPROPERLY INSTALLED MEL 34-36B. THE TECH WAS XYZ JJJ AND THE MEL'S SHOULD HAVE BEEN AN MEL FOR AUTOPLT (CH22) AND FLT DIRECTOR (CH34). I SHOULD HAVE WRITTEN AN MEL FOR BOTH PROBS BUT INSTEAD REFED A PREVIOUS PAGE WITH THE WRONG MEL NUMBER. THE ERROR WAS AGGRAVATED BY THE PLTS NOT KNOWING WHAT SYS WERE WORKING AND ACR MAINT CTL NOT GIVING ME PROPER GUIDANCE ON THE PROB. B737-400.

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.