Md-11 captain reported an anomaly with the FMS while conducting an approach to an international airp...

Narrative:

Established on the ILS approach to runway xxr prior to glideslope capture. Called for gear down. As the gear started to extend the aircraft pitched up and added power on its own. I disconnected the autopilot and autothrottles to regain control of the aircraft. The FMS appeared to be in the go-around mode and the airspeed bug was stuck around 180 kts and unable to select it back to the vref speed of 136 kts. The flight director and HUD were commanding a pitch up of greater than 10 degrees and a deflection of more than 10 degrees left. Runway was in sight and continued the approach with raw data and manual throttles to an uneventful landing. A maintenance write up on the prior leg described a similar event. As a side note the FMS databases were both out of date and deferred per the MEL. Also the go-around button was deferred [at our departure airport]. ILS xxr approach was hard tuned per the MEL. This event occurred after a 7 hours and 20 minutes flight with a 2 pilot crew [early in the morning] with high terrain in all quadrants.

Original NASA ASRS Text

Title: MD-11 Captain reported an anomaly with the FMS while conducting an approach to an international airport resulting in both speed and altitude deviations. The pilot quickly reverted to hand flying the aircraft; continued the approach; and landed uneventfully.

Narrative: Established on the ILS approach to Runway XXR prior to glideslope capture. Called for gear down. As the gear started to extend the aircraft pitched up and added power on its own. I disconnected the autopilot and autothrottles to regain control of the aircraft. The FMS appeared to be in the go-around mode and the airspeed bug was stuck around 180 kts and unable to select it back to the Vref speed of 136 kts. The flight director and HUD were commanding a pitch up of greater than 10 degrees and a deflection of more than 10 degrees left. Runway was in sight and continued the approach with raw data and manual throttles to an uneventful landing. A Maintenance write up on the prior leg described a similar event. As a side note the FMS databases were both out of date and deferred per the MEL. Also the go-around button was deferred [at our departure airport]. ILS XXR approach was hard tuned per the MEL. This event occurred after a 7 hours and 20 minutes flight with a 2 pilot crew [early in the morning] with high terrain in all quadrants.

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	1409433
Time
Date	201612
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Md-11 captain reported an anomaly with the FMS while conducting an approach to an international airport resulting in both speed and altitude deviations. The pilot quickly reverted to hand flying the aircraft; continued the approach; and landed uneventfully.