Altitude deviation.

Attributes
ACN	324510
Time
Date	199512
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lfff
State Reference	FO
Altitude	msl bound lower : 28000 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : lfff tower : clt
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 6000 flight time type : 2060
ASRS Report	324510
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 14000 flight time type : 500
ASRS Report	324848
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared to FL290. Confirmed clearance to FL290 with paris controller. Leveled at FL290. Controller asked to verify level FL280. We confirmed leveling at FL290 as assigned and previously read back. Controller said 'roger, air carrier xx now cleared FL280 to climb FL310.' we advised controller that we had copied clearance originally to FL290 and had read that altitude back previously and asked if there had been a problem? Controller responded 'air carrier xx, you are now cleared FL310.' no further communication regarding possible misunderstanding. No TCASII conflicts, closest airplane 15 mi plus 2000 ft above. Supplemental information from acn 324848: we inquired as to any problem twice and the controller simply cleared us to FL310.

Original NASA ASRS Text

Title: ALTDEV.

Narrative: CLRED TO FL290. CONFIRMED CLRNC TO FL290 WITH PARIS CTLR. LEVELED AT FL290. CTLR ASKED TO VERIFY LEVEL FL280. WE CONFIRMED LEVELING AT FL290 AS ASSIGNED AND PREVIOUSLY READ BACK. CTLR SAID 'ROGER, ACR XX NOW CLRED FL280 TO CLB FL310.' WE ADVISED CTLR THAT WE HAD COPIED CLRNC ORIGINALLY TO FL290 AND HAD READ THAT ALT BACK PREVIOUSLY AND ASKED IF THERE HAD BEEN A PROB? CTLR RESPONDED 'ACR XX, YOU ARE NOW CLRED FL310.' NO FURTHER COM REGARDING POSSIBLE MISUNDERSTANDING. NO TCASII CONFLICTS, CLOSEST AIRPLANE 15 MI PLUS 2000 FT ABOVE. SUPPLEMENTAL INFO FROM ACN 324848: WE INQUIRED AS TO ANY PROB TWICE AND THE CTLR SIMPLY CLRED US TO FL310.

Data retrieved from NASA's ASRS site as of July 2007 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.