When cleared for the fnchr RNAV STAR to mem and directed to maintain 270 KTS by ATC the FMS failed t...

Narrative:

[We were planning the] fnchr 1 RNAV STAR; north transition. The charted speed restriction at jesti; 250 KTS; was not in the FMS thus we programmed jesti at 250 KTS to comply. Before beginning the fnchr arrival; ATC assigned us 270 KTS until advised. The pilot flying speed intervened to 270 KTS. Approximately at fnchr; ATC advised normal speed and the pilot flying closed speed intervene and went back to VNAV which commanded 290 KTS; the aircraft began to accelerate; and the pitch FMA went to VNAV speed. I (pilot not flying) believed the FMS would shortly change the command speed to 250 KTS for the jesti restriction which was about 10 miles ahead. About that time a radio transmission on guard was loud and annoying. I was turning down the volume but got the wrong knob initially. Thus; it took me a moment to sort out the knobology. When I checked on the flight progress; I saw we were 3 miles from jesti at 290 KTS; the command speed bug was still at 290; and the pitch FMA was VNAV speed. I instructed the pilot flying to slow to 250 KTS and he aggressively slowed the aircraft. However; we were still more than 10 KTS fast crossing jesti.

Original NASA ASRS Text

Title: When cleared for the FNCHR RNAV STAR to MEM and directed to maintain 270 KTS by ATC the FMS failed to comply with the 250 KTS restriction at JESTI despite ATC's subsequent clearance removing the assigned speed.

Narrative: [We were planning the] FNCHR 1 RNAV STAR; north transition. The charted speed restriction at JESTI; 250 KTS; was not in the FMS thus we programmed JESTI at 250 KTS to comply. Before beginning the FNCHR arrival; ATC assigned us 270 KTS until advised. The pilot flying speed intervened to 270 KTS. Approximately at FNCHR; ATC advised normal speed and the pilot flying closed speed intervene and went back to VNAV which commanded 290 KTS; the aircraft began to accelerate; and the pitch FMA went to VNAV speed. I (pilot not flying) believed the FMS would shortly change the command speed to 250 KTS for the JESTI restriction which was about 10 miles ahead. About that time a radio transmission on Guard was loud and annoying. I was turning down the volume but got the wrong knob initially. Thus; it took me a moment to sort out the knobology. When I checked on the flight progress; I saw we were 3 miles from JESTI at 290 KTS; the command speed bug was still at 290; and the pitch FMA was VNAV SPD. I instructed the pilot flying to slow to 250 KTS and he aggressively slowed the aircraft. However; we were still more than 10 KTS fast crossing JESTI.

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.

Attributes
ACN	1036076
Time
Date	201209
Local Time Of Day	1201-1800
Place
Locale Reference	MEM.Airport
State Reference	TN
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types

When cleared for the fnchr RNAV STAR to mem and directed to maintain 270 KTS by ATC the FMS failed to comply with the 250 KTS restriction at jesti despite ATC's subsequent clearance removing the assigned speed.