<< >> NASA ASRS Report 1506296, December 2017

A319 flight crew reported an altitude overshoot on descent due to confusion with the charted transition level.

Attributes
ACN	1506296
Time
Date	201712
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Altimeter
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

We were descending down to 3000ft. I do not recall whether or not ATC called it FL030 but the approach chart has a transition level at FL180. This is were we reset to qnh. While holding at 3000 feet ATC informed us that our altimeter readout was 2800 feet and instructed us to switch to 29.92 and return to FL030 which we did.

Related reports:

• BE02 captain did not see qnh at the transition altitude. Had...

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Original NASA ASRS Text

Title: A319 flight crew reported an altitude overshoot on descent due to confusion with the charted transition level.

Narrative: We were descending down to 3000ft. I do not recall whether or not ATC called it FL030 but the approach chart has a transition level at FL180. This is were we reset to QNH. While holding at 3000 feet ATC informed us that our altimeter readout was 2800 feet and instructed us to switch to 29.92 and return to FL030 which we did.

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.