<< >> NASA ASRS Report 1102459, July 2013

A uav pilot failed to reset the altimeter when the aircraft was climbed to FL190 from 15;000 MSL. ATC questioned the altitude readout and the error was corrected.

Attributes
ACN	1102459
Time
Date	201307
Local Time Of Day	0601-1200
Place
Locale Reference	ZAB.ARTCC
State Reference	NM
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	UAV - Unpiloted Aerial Vehicle
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Altimeter
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 15 Flight Crew Total 2200 Flight Crew Type 600
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Undershoot Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance

Narrative:

When I was given command of the aircraft; it was below class a airspace on a VFR flight plan at 15;000 MSL. The altimeter setting was set as appropriate for the airspace and altitude it was in. I decided to climb to FL190 and activate our IFR flight plan. After reaching FL190 I forgot to reset my altimeter setting to 29.92. The effect of this was that the aircraft was flying approximately 300 feet lower than indicated by my altimeter. I did not notice this until questioned about it by the center controller approximately 20 minutes after reaching FL190. I corrected my error and the aircraft resumed flight at the correct altitude.

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Original NASA ASRS Text

Title: A UAV pilot failed to reset the altimeter when the aircraft was climbed to FL190 from 15;000 MSL. ATC questioned the altitude readout and the error was corrected.

Narrative: When I was given command of the aircraft; it was below Class A airspace on a VFR flight plan at 15;000 MSL. The altimeter setting was set as appropriate for the airspace and altitude it was in. I decided to climb to FL190 and activate our IFR flight plan. After reaching FL190 I forgot to reset my altimeter setting to 29.92. The effect of this was that the aircraft was flying approximately 300 feet lower than indicated by my altimeter. I did not notice this until questioned about it by the Center Controller approximately 20 minutes after reaching FL190. I corrected my error and the aircraft resumed flight at the correct altitude.

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.