A B737-400 was dispatched in non compliance of the MEL with #2 tank fuel quantity inoperative and #2...

Attributes
ACN	626298
Time
Date	200408
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel
Qualification	other
ASRS Report	626298
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : repair performance deficiency : non compliance with legal requirements performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance Maintenance Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Aircraft X arrived ZZZ with the #2 fuel quantity on MEL 28-6. During 'west/a' inspection it was noted that the #2 tank forward boost pump low pressure light was inoperative. Prior to departure maintenance control asked if I would accept MEL 28-1. I contacted ZZZ operations to see if this would have an impact on the expected load. Jnu operations said it would be no problem. I then advised maintenance control to go ahead with the MEL. I added the required amount of fuel per MEL 28-1 and the flight departed. The maintenance controller advised me of the incorrect assignment of the MEL after the aircraft had landed in ZZZ1. It was found that MEL 28-1B and 28-6 were not compatible. There is no reference in MEL 28-1 to also reference MEL 28-6, unfortunately I trusted that maintenance control had issued the correct MEL and maintenance procedures. I looked at MEL 28-1 and added the fuel that it required but failed to also check MEL 28-6 for any anomalies associated with it. According to maintenance control, neither the manufacturer's master MEL or the ddpg (dispatcher manual) list the exclusion in MEL 28-1 in regards to MEL 28-1, although MEL 28-6 does list the MEL 28-1 exclusion. In my opinion every excluded MEL should be xrefed to the other excluded MEL to aid in applicability determination.

Original NASA ASRS Text

Title: A B737-400 WAS DISPATCHED IN NON COMPLIANCE OF THE MEL WITH #2 TANK FUEL QUANTITY INOP AND #2 TANK FORWARD BOOST PUMP LOW PRESSURE WARNING LIGHT INOP.

Narrative: ACFT X ARRIVED ZZZ WITH THE #2 FUEL QUANTITY ON MEL 28-6. DURING 'W/A' INSPECTION IT WAS NOTED THAT THE #2 TANK FORWARD BOOST PUMP LOW PRESSURE LIGHT WAS INOP. PRIOR TO DEP MAINT CTL ASKED IF I WOULD ACCEPT MEL 28-1. I CONTACTED ZZZ OPS TO SEE IF THIS WOULD HAVE AN IMPACT ON THE EXPECTED LOAD. JNU OPS SAID IT WOULD BE NO PROB. I THEN ADVISED MAINT CTL TO GO AHEAD WITH THE MEL. I ADDED THE REQUIRED AMOUNT OF FUEL PER MEL 28-1 AND THE FLT DEPARTED. THE MAINT CTLR ADVISED ME OF THE INCORRECT ASSIGNMENT OF THE MEL AFTER THE ACFT HAD LANDED IN ZZZ1. IT WAS FOUND THAT MEL 28-1B AND 28-6 WERE NOT COMPATIBLE. THERE IS NO REF IN MEL 28-1 TO ALSO REF MEL 28-6, UNFORTUNATELY I TRUSTED THAT MAINT CTL HAD ISSUED THE CORRECT MEL AND MAINT PROCS. I LOOKED AT MEL 28-1 AND ADDED THE FUEL THAT IT REQUIRED BUT FAILED TO ALSO CHK MEL 28-6 FOR ANY ANOMALIES ASSOCIATED WITH IT. ACCORDING TO MAINT CTL, NEITHER THE MANUFACTURER'S MASTER MEL OR THE DDPG (DISPATCHER MANUAL) LIST THE EXCLUSION IN MEL 28-1 IN REGARDS TO MEL 28-1, ALTHOUGH MEL 28-6 DOES LIST THE MEL 28-1 EXCLUSION. IN MY OPINION EVERY EXCLUDED MEL SHOULD BE XREFED TO THE OTHER EXCLUDED MEL TO AID IN APPLICABILITY DETERMINATION.

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 B737-400 was dispatched in non compliance of the MEL with #2 tank fuel quantity inoperative and #2 tank forward boost pump low pressure warning light inoperative.