Giv first officer reported they attempted several takeoffs that were rejected when a reverser light ...

Narrative:

After doing a crew swap into an airplane with an MEL'd right thrust reverser; we were notified of the MEL and saw the sign off on the sheet. Everything seemed to be fine and the captain taxied out to the runway where we were cleared for takeoff. On the takeoff roll we got a right reverser unlock light and the corresponding red cas message. The takeoff was aborted and as soon as we taxied off the runway we contacted maintenance who advised us that a circuit breaker for the MEL'd reverser had been neglected to be pulled. They advised us to pull the circuit breaker and try again. On the second take off attempt the reverser unlock light illuminated again along with the corresponding red cas message. We aborted the takeoff and taxied back to parking; where we contacted maintenance again and they said they were sending out the local maintenance guys who had worked on it that morning. We went to the hotel and a few hours later were contacted by maintenance to go out to the airplane and do a test run up. I went to the airport and conducted the run up and all checkouts that maintenance asked me to run; all successful. When I pulled the MEL to do the MEL to our write up I noticed that the previous MEL was not signed off correctly. It was signed off by a pilot; but had an (M) procedure requirement. The mechanics there advised me that they had not performed the maintenance functions required by the MEL prior to our attempted departure; and that is why there was no sign off by them. There was obviously a breakdown of communication between maintenance and the previous crew; combined with our failure to reference the MEL to compare what was signed off to the requirement of said MEL entry. In the future I will very closely inspect any MEL's and make sure that all maintenance actions required of them have been performed.

Original NASA ASRS Text

Title: GIV First Officer reported they attempted several takeoffs that were rejected when a reverser light illuminated. Confusion over applicability of MEL was contributory.

Narrative: After doing a crew swap into an airplane with an MEL'd right Thrust Reverser; we were notified of the MEL and saw the sign off on the sheet. Everything seemed to be fine and the captain taxied out to the runway where we were cleared for takeoff. On the takeoff roll we got a right reverser unlock light and the corresponding red CAS message. The takeoff was aborted and as soon as we taxied off the runway we contacted maintenance who advised us that a circuit breaker for the MEL'd reverser had been neglected to be pulled. They advised us to pull the circuit breaker and try again. On the second take off attempt the reverser unlock light illuminated again along with the corresponding red CAS message. We aborted the takeoff and taxied back to parking; where we contacted maintenance again and they said they were sending out the local maintenance guys who had worked on it that morning. We went to the hotel and a few hours later were contacted by maintenance to go out to the airplane and do a test run up. I went to the airport and conducted the run up and all checkouts that maintenance asked me to run; all successful. When I pulled the MEL to do the MEL to our write up I noticed that the previous MEL was not signed off correctly. It was signed off by a pilot; but had an (M) procedure requirement. The mechanics there advised me that they had not performed the maintenance functions required by the MEL prior to our attempted departure; and that is why there was no sign off by them. There was obviously a breakdown of communication between maintenance and the previous crew; combined with our failure to reference the MEL to compare what was signed off to the requirement of said MEL entry. In the future I will very closely inspect any MEL's and make sure that all maintenance actions required of them have been performed.

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.

Attributes
ACN	1298170
Time
Date	201509
Local Time Of Day	0601-1200
Place
Locale Reference	LGAV.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Gulfstream IV / G350 / G450
Operating Under FAR Part	Part 135
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 5000 Flight Crew Type 40
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Giv first officer reported they attempted several takeoffs that were rejected when a reverser light illuminated. Confusion over applicability of MEL was contributory.