B767 crew found maintenance did not placard all required items called for in MEL deferral of a pneumatic high pressure bleed valve that would not open.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	539161
Time
Date	200202
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	539161
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	539163
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : non compliance with mel maintenance problem : improper documentation non adherence : far non adherence : published procedure non adherence : company policies other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : eicas other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : repair performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Company Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

MEL compliance. After gate departure, right high pressure pneumatic bleed valve would not open. Tried to troubleshoot while returning to the gate. Maintenance could not fix and placarded right high pressure shutoff valve inoperative per MEL xx-XXX. After they left, we called them back to placard additional item related to that MEL item. There was an additional MEL provision all involved overlooked. Found out about said item en route to lax. Had the hydraulic driven generator placarded in lax. Hydraulic driven generator not required on domestic operation, however, it did not comply to the letter of MEL.

Original NASA ASRS Text

Title: B767 CREW FOUND MAINT DID NOT PLACARD ALL REQUIRED ITEMS CALLED FOR IN MEL DEFERRAL OF A PNEUMATIC HIGH PRESSURE BLEED VALVE THAT WOULD NOT OPEN.

Narrative: MEL COMPLIANCE. AFTER GATE DEP, R HIGH PRESSURE PNEUMATIC BLEED VALVE WOULD NOT OPEN. TRIED TO TROUBLESHOOT WHILE RETURNING TO THE GATE. MAINT COULD NOT FIX AND PLACARDED R HIGH PRESSURE SHUTOFF VALVE INOP PER MEL XX-XXX. AFTER THEY LEFT, WE CALLED THEM BACK TO PLACARD ADDITIONAL ITEM RELATED TO THAT MEL ITEM. THERE WAS AN ADDITIONAL MEL PROVISION ALL INVOLVED OVERLOOKED. FOUND OUT ABOUT SAID ITEM ENRTE TO LAX. HAD THE HYD DRIVEN GENERATOR PLACARDED IN LAX. HYD DRIVEN GENERATOR NOT REQUIRED ON DOMESTIC OP, HOWEVER, IT DID NOT COMPLY TO THE LETTER OF MEL.

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.