Md-80 flight crew reported the misapplication of a fuel boost pump MEL resulting in both boost pumps...

Attributes
ACN	1333320
Time
Date	201602
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	Fuel Booster Pump
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy Inflight Event / Encounter Fuel Issue

Narrative:

Upon arrival to aircraft it was noticed that the fwd right fuel tank boost pump circuit breaker tripped. After notifying maintenance of the write up; they MEL'd the fwd right tank boost pump. It wasn't realized at the time; but maintenance turned off the aft right fuel tank boost pump in accordance with the maintenance procedures and placed the yellow inop sticker next to it. Enroute after the center tank fuel was exhausted; the right inlet fuel press low light illuminated. This was obviously because the good boost pump was turned off and the MEL sticker was placed directly next to it. We ran the associated QRH and proceeded in the descent to our destination and landed safely without incident. The fuel burn and quantity was also indicating normal. After landing; I wrote up the problem only to realize after what had transpired. The MEL was correctly applied but was incorrectly administered and double checked. I failed to catch the mistake. Double checking what exactly is being done and the actions being taken. Cross referencing myself to make sure what is being done.

Original NASA ASRS Text

Title: MD-80 flight crew reported the misapplication of a fuel boost pump MEL resulting in both boost pumps inoperative in the right wing tank. Fuel continued to feed the engine from the right tank through the engine driven fuel suction pump.

Narrative: Upon Arrival to aircraft it was noticed that the FWD RIGHT FUEL TANK BOOST PUMP circuit breaker tripped. After notifying maintenance of the write up; they MEL'd the FWD right tank boost pump. It wasn't realized at the time; but maintenance turned off the AFT right fuel tank boost pump in accordance with the maintenance procedures and placed the yellow inop sticker next to it. Enroute after the center tank fuel was exhausted; the right inlet fuel press low light illuminated. This was obviously because the good boost pump was turned off and the MEL sticker was placed directly next to it. We ran the associated QRH and proceeded in the descent to our destination and landed safely without incident. The fuel burn and quantity was also indicating normal. After landing; I wrote up the problem only to realize after what had transpired. The MEL was correctly applied but was incorrectly administered and double checked. I failed to catch the mistake. Double checking what exactly is being done and the actions being taken. Cross referencing myself to make sure what is being done.

Data retrieved from NASA's ASRS site 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.

Md-80 flight crew reported the misapplication of a fuel boost pump MEL resulting in both boost pumps inoperative in the right wing tank. Fuel continued to feed the engine from the right tank through the engine driven fuel suction pump.