Sticking buttons on the FMS keypad of a crj-700 caused the FMS to not sequence to the ILS. The pilot...

Attributes
ACN	1120050
Time
Date	201305
Local Time Of Day	1201-1800
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

There was a deferred maintenance discrepancy stating that the FMS keypad had a key or keys that would stick. We had flown the arrival and were transitioning to the ILS approach. I tried to sequence the FMS to the ILS; [but] a key stuck and the FMS did not sequence. The captain was distracted and the airplane began a turn to the right; not continuing on a heading of 190 degrees. ATC immediately gave us a right turn around to a heading of 090 degrees to re-vector us for the ILS. We were vectored back on to the ILS and landed normally. The deviation occurred because both crew members were distracted by the problem with the keypad.

Original NASA ASRS Text

Title: Sticking buttons on the FMS keypad of a CRJ-700 caused the FMS to not sequence to the ILS. The pilots became distracted and did not immediately recognize that the aircraft failed to maintain the proper heading.

Narrative: There was a deferred maintenance discrepancy stating that the FMS keypad had a key or keys that would stick. We had flown the arrival and were transitioning to the ILS approach. I tried to sequence the FMS to the ILS; [but] a key stuck and the FMS did not sequence. The Captain was distracted and the airplane began a turn to the right; not continuing on a heading of 190 degrees. ATC immediately gave us a right turn around to a heading of 090 degrees to re-vector us for the ILS. We were vectored back on to the ILS and landed normally. The deviation occurred because both crew members were distracted by the problem with the keypad.

Data retrieved from NASA's ASRS site as of July 2013 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.

Sticking buttons on the FMS keypad of a crj-700 caused the FMS to not sequence to the ILS. The pilots became distracted and did not immediately recognize that the aircraft failed to maintain the proper heading.