An md-88 flight crew experienced loss of FMC and RNAV capability departing atl. They were unsuccessf...

Narrative:

During takeoff on runway 9L at liftoff we had both maps fail. When sent to atl departure we told them we were unable to comply with the RNAV departure and would require vectors until we could run the checklist. We completed the after takeoff checklist I turned the autopilot on and I called for the FMC fail checklist. We completed the QRH and were unable to recover RNAV. I gave the aircraft and radios to the first officer and I contacted flight control and maintenance. Maintenance gave me some things to try but was unable to recover RNAV. Flight control and I agreed that we could continue the flight if ATC agreed and I asked for new fuel burn and time. I contacted ATC and we got a new clearance to comply with no RNAV and rvsm. No other problems occurred until descent. At 15;000 ft MSL we were in the clouds in light rain. There was nothing but green on the radar. We were hit by lightning twice in 10 seconds. The aircraft systems were normal and the rest of the flight was fine. I sent an ACARS to dispatch and called them and maintenance on the ground.

Original NASA ASRS Text

Title: An MD-88 flight crew experienced loss of FMC and RNAV capability departing ATL. They were unsuccessful in restoring the FMC and continued to destination.

Narrative: During takeoff on Runway 9L at liftoff we had both maps fail. When sent to ATL departure we told them we were unable to comply with the RNAV departure and would require vectors until we could run the checklist. We completed the after takeoff checklist I turned the autopilot on and I called for the FMC fail checklist. We completed the QRH and were unable to recover RNAV. I gave the aircraft and radios to the First Officer and I contacted flight control and maintenance. Maintenance gave me some things to try but was unable to recover RNAV. Flight Control and I agreed that we could continue the flight if ATC agreed and I asked for new fuel burn and time. I contacted ATC and we got a new clearance to comply with no RNAV and RVSM. No other problems occurred until descent. At 15;000 FT MSL we were in the clouds in light rain. There was nothing but green on the radar. We were hit by lightning twice in 10 seconds. The aircraft systems were normal and the rest of the flight was fine. I sent an ACARS to Dispatch and called them and Maintenance on the ground.

Data retrieved from NASA's ASRS site as of April 2012 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	836482
Time
Date	200905
Local Time Of Day	1801-2400
Place
Locale Reference	ATL.Airport
State Reference	GA
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer
Experience	Flight Crew Last 90 Days 210 Flight Crew Total 11500 Flight Crew Type 4500
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Weather / Turbulence

An md-88 flight crew experienced loss of FMC and RNAV capability departing atl. They were unsuccessful in restoring the FMC and continued to destination.