A B757 flight crew reported the FMC dumped the skbo RNAV 13L arrival while in a descent to 12;000 fe...

Attributes
ACN	1340933
Time
Date	201603
Local Time Of Day	0601-1200
Place
Locale Reference	SKBO.Airport
State Reference	FO
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 7623 Flight Crew Type 1353
Person 2
Function	Pilot Flying First Officer
Experience	Flight Crew Total 6517 Flight Crew Type 3968
Events
Anomaly	ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude

Narrative:

Being vectored for the RNAV 13L approach. Skbo in 1L; discontinuity; then ismut. Cleared direct ismut for the approach; I put ismut in 1L and executed. First officer saw execute light illuminated on the right FMC (not illuminated on the left side). When he pressed execute; we lost both navigation screens and had the trk message on them. I tried to reinstall the approach (I had bog VOR in manual and knew we were at a safe altitude). Couldn't reinstall because the FMC's were locked up. We climbed to 14;000 (MSA) and got radar vectors while we figured it out. Controller momentarily confused my voice with that of a female air carrier pilot. This was corrected by the slow annunciation of call sign and flight number by she and I. The FMC's came back online. I installed the approach for the ILS 13R and we landed without incident.

Original NASA ASRS Text

Title: A B757 flight crew reported the FMC dumped the SKBO RNAV 13L arrival while in a descent to 12;000 feet. The crew was locked out of the FMC for two minutes. Unable to reload data; they requested radar vectors but then successfully loaded and flew the ILS 13R.

Narrative: Being vectored for the RNAV 13L approach. SKBO in 1L; discontinuity; then ISMUT. Cleared direct ISMUT for the approach; I put ISMUT in 1L and executed. First Officer saw execute light illuminated on the right FMC (not illuminated on the left side). When he pressed execute; we lost both navigation screens and had the TRK message on them. I tried to reinstall the approach (I had BOG VOR in manual and knew we were at a safe altitude). Couldn't reinstall because the FMC's were locked up. We climbed to 14;000 (MSA) and got radar vectors while we figured it out. Controller momentarily confused my voice with that of a female air carrier pilot. This was corrected by the slow annunciation of call sign and flight number by she and I. The FMC's came back online. I installed the approach for the ILS 13R and we landed without incident.

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.

A B757 flight crew reported the FMC dumped the skbo RNAV 13L arrival while in a descent to 12;000 feet. The crew was locked out of the FMC for two minutes. Unable to reload data; they requested radar vectors but then successfully loaded and flew the ILS 13R.