<< >> NASA ASRS Report 177414, May 1991

Commuter light transport altitude deviation excursion from clearance altitude in response to TCASII RA.

Attributes
ACN	177414
Time
Date	199105
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pnt
State Reference	IL
Altitude	msl bound lower : 7000 msl bound upper : 7400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pia
Operator	common carrier : air carrier
Make Model Name	Light Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 8000 flight time type : 3000
ASRS Report	177414
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 4200 flight time type : 1500
ASRS Report	177635
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

TCAS directed flight crew to climb 400' above assigned altitude. Notified ATC at initiation of climb. TCAS worked well.

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Original NASA ASRS Text

Title: COMMUTER LTT ALT DEVIATION EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.

Narrative: TCAS DIRECTED FLT CREW TO CLB 400' ABOVE ASSIGNED ALT. NOTIFIED ATC AT INITIATION OF CLB. TCAS WORKED WELL.

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.