An MD80 deviates from his assigned altitude after receiving a TCASII climb RA.

Attributes
ACN	390940
Time
Date	199801
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cqy airport : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11300
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	390940
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude altitude deviation : overshoot conflict : airborne less severe non adherence : clearance
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 : 0 vertical : 600
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At 11000 ft, 250 KTS, level on cqy arrival received TCASII climb resolution alert. We followed alert per procedure. Noted 600 ft separation from B737 below us. We were IMC so it was too close for my comfort zone. Immediately notified approach controller during our climb. We climbed to about 11300 ft. Once event was over I requested to return to 11000 ft, we did, and continued normally. Captain did a great job of flying for his first sequence back on S80.

Original NASA ASRS Text

Title: AN MD80 DEVIATES FROM HIS ASSIGNED ALT AFTER RECEIVING A TCASII CLB RA.

Narrative: AT 11000 FT, 250 KTS, LEVEL ON CQY ARR RECEIVED TCASII CLB RESOLUTION ALERT. WE FOLLOWED ALERT PER PROC. NOTED 600 FT SEPARATION FROM B737 BELOW US. WE WERE IMC SO IT WAS TOO CLOSE FOR MY COMFORT ZONE. IMMEDIATELY NOTIFIED APCH CTLR DURING OUR CLB. WE CLBED TO ABOUT 11300 FT. ONCE EVENT WAS OVER I REQUESTED TO RETURN TO 11000 FT, WE DID, AND CONTINUED NORMALLY. CAPT DID A GREAT JOB OF FLYING FOR HIS FIRST SEQUENCE BACK ON S80.

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.