Altitude deviation altitude excursion in flight crew response to TCASII RA.

Attributes
ACN	272010
Time
Date	199405
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : crw
State Reference	WV
Altitude	msl bound lower : 29000 msl bound upper : 29800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid tower : sat
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 205 flight time total : 13000 flight time type : 10000
ASRS Report	272010
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Received traffic alert while in established cruise confign for some time. Looked at TCASII and tried to pick up traffic visually. Very shortly after the alert, TCASII went to a rapid 'climb, climb' RA. I responded by climbing rapidly to 29800 ft before receiving 'clear of conflict.' traffic was never sighted visually. Notified ATC of our actions and return to FL290. Traffic was probably intending to level at FL280, but ATC failed to notify us of its approach or intentions. Since TCASII showed it coming directly at us, we were forced to take rapid action, causing discomfort to passenger.

Original NASA ASRS Text

Title: ALTDEV ALT EXCURSION IN FLC RESPONSE TO TCASII RA.

Narrative: RECEIVED TFC ALERT WHILE IN ESTABLISHED CRUISE CONFIGN FOR SOME TIME. LOOKED AT TCASII AND TRIED TO PICK UP TFC VISUALLY. VERY SHORTLY AFTER THE ALERT, TCASII WENT TO A RAPID 'CLB, CLB' RA. I RESPONDED BY CLBING RAPIDLY TO 29800 FT BEFORE RECEIVING 'CLR OF CONFLICT.' TFC WAS NEVER SIGHTED VISUALLY. NOTIFIED ATC OF OUR ACTIONS AND RETURN TO FL290. TFC WAS PROBABLY INTENDING TO LEVEL AT FL280, BUT ATC FAILED TO NOTIFY US OF ITS APCH OR INTENTIONS. SINCE TCASII SHOWED IT COMING DIRECTLY AT US, WE WERE FORCED TO TAKE RAPID ACTION, CAUSING DISCOMFORT TO PAX.

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.