Altitude deviation, excursion from assigned.

Attributes
ACN	90553
Time
Date	198807
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : fsm
State Reference	AR
Altitude	msl bound lower : 10000 msl bound upper : 24000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 20 flight time total : 9500 flight time type : 700
ASRS Report	90553
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 60 flight time total : 4800 flight time type : 150
ASRS Report	90554
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were level at FL240 and were switched to ZME 126.1. The copilot called several times and I also tried. We thought was received clearance to 10000'. Copilot replied small transport leaving FL240 to 10000'. We were in an area of thunderstorms and I was busy looking at radar and did not notice the frequency selected was 124.1. I didn't know of the problem until the copilot realized her mistake and called ZME on 126.1 and he asked us who gave us clearance to 10000'. I didn't know about the frequency mix up until we got on the ground and were talking about it. I think the problem was caused by a late handoff to ZME and were expected a descent clearance.

Original NASA ASRS Text

Title: ALT DEVIATION, EXCURSION FROM ASSIGNED.

Narrative: WE WERE LEVEL AT FL240 AND WERE SWITCHED TO ZME 126.1. THE COPLT CALLED SEVERAL TIMES AND I ALSO TRIED. WE THOUGHT WAS RECEIVED CLRNC TO 10000'. COPLT REPLIED SMT LEAVING FL240 TO 10000'. WE WERE IN AN AREA OF TSTMS AND I WAS BUSY LOOKING AT RADAR AND DID NOT NOTICE THE FREQ SELECTED WAS 124.1. I DIDN'T KNOW OF THE PROB UNTIL THE COPLT REALIZED HER MISTAKE AND CALLED ZME ON 126.1 AND HE ASKED US WHO GAVE US CLRNC TO 10000'. I DIDN'T KNOW ABOUT THE FREQ MIX UP UNTIL WE GOT ON THE GND AND WERE TALKING ABOUT IT. I THINK THE PROB WAS CAUSED BY A LATE HDOF TO ZME AND WERE EXPECTED A DSCNT CLRNC.

Data retrieved from NASA's ASRS site as of August 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.