<< >> NASA ASRS Report 430520, March 1999

DC9 crew leaves assigned altitude after taking descent clearance for another aircraft in dtw airspace.

Attributes
ACN	430520
Time
Date	199903
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl single value : 11000
Environment
Flight Conditions	IMC
Weather Elements	Snow
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : spica two
Flight Plan	IFR
Person 1
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 1700
ASRS Report	430520
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 20000 flight time type : 2000
ASRS Report	430519
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Read back clearance to descend to 11000 ft and 210 KTS speed. ATC did not confirm readback. Later, ATC advised clearance was for another aircraft. ATC then said 11000 ft was ok to maintain, but increased to 250 KTS. Remainder of approach and landing was uneventful.

Related reports:

• ARTCC radar controller issued descent clearance through the ...
• An F100 crew misinterped a descent clearance and descended t...
• A cargo flight crew overshoots their assigned altitude in de...
• Flight crew of a B737 were assigned and acknowledged a desce...
• B737 flight crew missed an assigned crossing restriction dur...
• A B727 crew misinterped clearance and continued descent thro...

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

Original NASA ASRS Text

Title: DC9 CREW LEAVES ASSIGNED ALT AFTER TAKING DSCNT CLRNC FOR ANOTHER ACFT IN DTW AIRSPACE.

Narrative: READ BACK CLRNC TO DSND TO 11000 FT AND 210 KTS SPD. ATC DID NOT CONFIRM READBACK. LATER, ATC ADVISED CLRNC WAS FOR ANOTHER ACFT. ATC THEN SAID 11000 FT WAS OK TO MAINTAIN, BUT INCREASED TO 250 KTS. REMAINDER OF APCH AND LNDG WAS UNEVENTFUL.

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.