Narrative:

Saab aircraft was assigned on my desk for 1 roundtrip. During planning; I noted that MEL 28-9 and 28-10 had both been opened and that the language in 28-10 seemed to preclude having both MEL's open at the same time. MEL 28-10 says to use the cockpit gauges to confirm fuel quantity but MEL 28-09 allows 1 of the 2 gauges to be inoperative with the magnetic dipsticks to be used instead. I went to the saab maintenance controller (I don't remember which one) and explained my concern about the operations procedure in MEL 28-10; but to the best of my recollection; he explained that with the dipstick procedure we were allowed to fly. He conceded that MEL 28-10 was poorly written and a correction should be published. I coordination with the captain and confirmed that all other requirements of MEL 28-09 were met.

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Original NASA ASRS Text

Title: AN SF340 WAS DISPATCHED WITH 2 CONFLICTING DEFERRED ITEMS. A COCKPIT FUEL QUANTITY INDICATOR AND AN UNDER WING FUEL QUANTITY INDICATOR IN THE SAME TANK.

Narrative: SAAB ACFT WAS ASSIGNED ON MY DESK FOR 1 ROUNDTRIP. DURING PLANNING; I NOTED THAT MEL 28-9 AND 28-10 HAD BOTH BEEN OPENED AND THAT THE LANGUAGE IN 28-10 SEEMED TO PRECLUDE HAVING BOTH MEL'S OPEN AT THE SAME TIME. MEL 28-10 SAYS TO USE THE COCKPIT GAUGES TO CONFIRM FUEL QUANTITY BUT MEL 28-09 ALLOWS 1 OF THE 2 GAUGES TO BE INOP WITH THE MAGNETIC DIPSTICKS TO BE USED INSTEAD. I WENT TO THE SAAB MAINT CTLR (I DON'T REMEMBER WHICH ONE) AND EXPLAINED MY CONCERN ABOUT THE OPS PROC IN MEL 28-10; BUT TO THE BEST OF MY RECOLLECTION; HE EXPLAINED THAT WITH THE DIPSTICK PROC WE WERE ALLOWED TO FLY. HE CONCEDED THAT MEL 28-10 WAS POORLY WRITTEN AND A CORRECTION SHOULD BE PUBLISHED. I COORD WITH THE CAPT AND CONFIRMED THAT ALL OTHER REQUIREMENTS OF MEL 28-09 WERE MET.

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.