<< >> NASA ASRS Report 1306087, October 2015

CE560 flight crew failed to arm the VNAV mode of the FMC and did not descend to meet ATC assigned crossing altitude.

Attributes
ACN	1306087
Time
Date	201510
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citation V/Ultra/Encore (C560)
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

We were level at 14;000 feet and told to cross VOR ZZZ at 11;000 feet. The correct altitude was entered into both the altitude selector and the FMS for the crossing restriction. Pilot flying failed to arm VNAV and pilot monitoring didn't notice the unselected mode selection. Upon crossing ZZZ; were given a descent to 6;000 feet. We were still level at 14;000 feet. I then realized we missed the crossing restriction. Both pilots should double check that the correct FMC modes are selected.

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Original NASA ASRS Text

Title: CE560 flight crew failed to arm the VNAV mode of the FMC and did not descend to meet ATC assigned crossing altitude.

Narrative: We were level at 14;000 feet and told to cross VOR ZZZ at 11;000 feet. The correct altitude was entered into both the altitude selector and the FMS for the crossing restriction. Pilot flying failed to arm VNAV and pilot monitoring didn't notice the unselected mode selection. Upon crossing ZZZ; were given a descent to 6;000 feet. We were still level at 14;000 feet. I then realized we missed the crossing restriction. Both pilots should double check that the correct FMC modes are selected.

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.