<< >> NASA ASRS Report 534830, January 2002

A B727 cargo crew initially accepts the descent clearance read to a company flight at the same altitude with a similar sounding call sign near jvl, wi.

Attributes
ACN	534830
Time
Date	200201
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : jvl.vortac
State Reference	WI
Altitude	msl bound lower : 12700 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 120 flight time total : 5000 flight time type : 120
ASRS Report	534830
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6000 flight time type : 150
ASRS Report	535061
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude flight crew : became reoriented other
Supplementary
Problem Areas	Aircraft ATC Human Performance Airspace Structure Company Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flight X level at 13000 ft MSL (us) and company flight Y level at 13000 ft MSL. ZAU told flight Y to descend to 10000 ft MSL, expedite, maintain 300 KIAS. Flight X read back clearance and started to descend to 10000 ft MSL. We heard center call flight Y again, to confirm their clearance and realized it wasn't our clearance so we stopped our descent at 12700 ft and climbed back up to 13000 ft MSL. Center never called us about our deviation. Too much traffic and long call signs and fatigue contributed to this situation.

Related reports:

• B727 level at 11000 ft thought altitude hold on autoplt was ...
• B737-300 crew initially misinterpreted the altitude warning ...
• A CE560 flight crew failed to comply with the initial altitu...
• Giv grew were initially issued climb to FL280. Later, ATC am...
• DHC8 crew climbed initially to 17000 ft. While waiting for h...
• A B737-700 flight crew inadvertently forget to turn back on ...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: A B727 CARGO CREW INITIALLY ACCEPTS THE DSCNT CLRNC READ TO A COMPANY FLT AT THE SAME ALT WITH A SIMILAR SOUNDING CALL SIGN NEAR JVL, WI.

Narrative: FLT X LEVEL AT 13000 FT MSL (US) AND COMPANY FLT Y LEVEL AT 13000 FT MSL. ZAU TOLD FLT Y TO DSND TO 10000 FT MSL, EXPEDITE, MAINTAIN 300 KIAS. FLT X READ BACK CLRNC AND STARTED TO DSND TO 10000 FT MSL. WE HEARD CTR CALL FLT Y AGAIN, TO CONFIRM THEIR CLRNC AND REALIZED IT WASN'T OUR CLRNC SO WE STOPPED OUR DSCNT AT 12700 FT AND CLBED BACK UP TO 13000 FT MSL. CTR NEVER CALLED US ABOUT OUR DEV. TOO MUCH TFC AND LONG CALL SIGNS AND FATIGUE CONTRIBUTED TO THIS SIT.

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.