Flight crew of an medium large transport air carrier aircraft descended from assigned altitude in re...

Attributes
ACN	247779
Time
Date	199307
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : air
State Reference	OH
Altitude	msl bound lower : 32400 msl bound upper : 33000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob
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 : commercial pilot : flight engineer pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 180 flight time total : 12239 flight time type : 180
ASRS Report	247779
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 600
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

While en route to dca from mci level at FL330, we had to deviate left and right off course for WX. Finally, we were cleared direct to bucko fpr. Shortly thereafter, we were commanded to turn to a heading of 070 degrees immediately. I disengaged the autoplt and started a turn to 070 degrees. Within a few seconds we received a TA followed by an RA on the TCASII. We honored the commands and advised ATC as we descended to 32400 ft. We briefly leveled off, then started back up to our cruising altitude, and proceeded on course. The following day I discussed the incident with quality assurance specialist at the ZOB. He advised me that the controller error had been rectified.

Original NASA ASRS Text

Title: FLC OF AN MLG ACR ACFT DSNDED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA.

Narrative: WHILE ENRTE TO DCA FROM MCI LEVEL AT FL330, WE HAD TO DEVIATE L AND R OFF COURSE FOR WX. FINALLY, WE WERE CLRED DIRECT TO BUCKO FPR. SHORTLY THEREAFTER, WE WERE COMMANDED TO TURN TO A HDG OF 070 DEGS IMMEDIATELY. I DISENGAGED THE AUTOPLT AND STARTED A TURN TO 070 DEGS. WITHIN A FEW SECONDS WE RECEIVED A TA FOLLOWED BY AN RA ON THE TCASII. WE HONORED THE COMMANDS AND ADVISED ATC AS WE DSNDED TO 32400 FT. WE BRIEFLY LEVELED OFF, THEN STARTED BACK UP TO OUR CRUISING ALT, AND PROCEEDED ON COURSE. THE FOLLOWING DAY I DISCUSSED THE INCIDENT WITH QUALITY ASSURANCE SPECIALIST AT THE ZOB. HE ADVISED ME THAT THE CTLR ERROR HAD BEEN RECTIFIED.

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.

Flight crew of an medium large transport air carrier aircraft descended from assigned altitude in response to a TCASII RA.