TCASII RA creates an altitude deviation altitude excursion by air carrier first officer.

Attributes
ACN	191784
Time
Date	199110
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zid
State Reference	IN
Altitude	msl bound lower : 14000 msl bound upper : 14800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute airway : zid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 260 flight time total : 3100 flight time type : 900
ASRS Report	191784
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Our TCASII ordered a RA. At this time we followed a climb command and vacated 14000 ft to approximately 14800 ft. When clear of conflict, we descended back down to 14000 ft and reported this to center. They said that they needed nothing in reference to the event. We (captain and myself) never did see the traffic visually and at no time were alerted by the center controller.

Original NASA ASRS Text

Title: TCASII RA CREATES AN ALT DEV ALT EXCURSION BY ACR FO.

Narrative: OUR TCASII ORDERED A RA. AT THIS TIME WE FOLLOWED A CLB COMMAND AND VACATED 14000 FT TO APPROX 14800 FT. WHEN CLR OF CONFLICT, WE DSNDED BACK DOWN TO 14000 FT AND RPTED THIS TO CENTER. THEY SAID THAT THEY NEEDED NOTHING IN REF TO THE EVENT. WE (CAPT AND MYSELF) NEVER DID SEE THE TFC VISUALLY AND AT NO TIME WERE ALERTED BY THE CENTER CTLR.

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.