Captain of air carrier medium large transport aircraft deviated from assigned altitude in response t...

Attributes
ACN	231158
Time
Date	199301
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : den
State Reference	CO
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : den
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 164 flight time total : 12500 flight time type : 4500
ASRS Report	231158
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were slowed to 210 KTS, level 10000 ft and being radar vectored for a visual approach to runways 17 when we received an RA to 'climb, increase climb'. I was the PF and immediately complied with the TCASII RA. The aural warning that accompanied the resolution was so loud that both of us (pilots) were unable to communicate with ATC and advise them of our deviation from our assigned altitude. A total gain of approximately 1000 ft before the RA terminated. Advised ATC and returned to previously cleared altitude. I recommend that all aural warnings after the initial TCASII warning be suppressed to a reduced aural level.

Original NASA ASRS Text

Title: CAPT OF ACR MLG ACFT DEVIATED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA.

Narrative: WE WERE SLOWED TO 210 KTS, LEVEL 10000 FT AND BEING RADAR VECTORED FOR A VISUAL APCH TO RWYS 17 WHEN WE RECEIVED AN RA TO 'CLB, INCREASE CLB'. I WAS THE PF AND IMMEDIATELY COMPLIED WITH THE TCASII RA. THE AURAL WARNING THAT ACCOMPANIED THE RESOLUTION WAS SO LOUD THAT BOTH OF US (PLTS) WERE UNABLE TO COMMUNICATE WITH ATC AND ADVISE THEM OF OUR DEV FROM OUR ASSIGNED ALT. A TOTAL GAIN OF APPROX 1000 FT BEFORE THE RA TERMINATED. ADVISED ATC AND RETURNED TO PREVIOUSLY CLRED ALT. I RECOMMEND THAT ALL AURAL WARNINGS AFTER THE INITIAL TCASII WARNING BE SUPPRESSED TO A REDUCED AURAL LEVEL.

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.

Captain of air carrier medium large transport aircraft deviated from assigned altitude in response to a TCASII RA.