Air carrier X TCASII RA unauthorized climb from assigned altitude.

Attributes
ACN	278212
Time
Date	199407
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ewc
State Reference	PA
Altitude	msl bound lower : 26000 msl bound upper : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 14
ASRS Report	278212
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 2000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X FK10/right was wbound J-64 level at FL260. Air carrier Y b- 737S/right was direct ton climbing to FL250. X advised ATC he was responding to an RA and climbed to FL280. Y appeared to be climbing at approximately 2500 FPM. A third aircraft could have been a factor. Aircraft was at FL280, nwbound on J-211. Approximately 15 mi south of X on a converging course. No loss of separation occurred. X also advised ATC he needed to deviation south of J-64 due to WX. X subsequently requested FL310. X was cleared to maintain FL270, due to third aircraft at FL280. The maneuver appeared to be both excessive and unnecessary from my perspective. It also could have been very dangerous, had the third aircraft been closer.

Original NASA ASRS Text

Title: ACR X TCASII RA UNAUTH CLB FROM ASSIGNED ALT.

Narrative: ACR X FK10/R WAS WBOUND J-64 LEVEL AT FL260. ACR Y B- 737S/R WAS DIRECT TON CLBING TO FL250. X ADVISED ATC HE WAS RESPONDING TO AN RA AND CLBED TO FL280. Y APPEARED TO BE CLBING AT APPROX 2500 FPM. A THIRD ACFT COULD HAVE BEEN A FACTOR. ACFT WAS AT FL280, NWBOUND ON J-211. APPROX 15 MI S OF X ON A CONVERGING COURSE. NO LOSS OF SEPARATION OCCURRED. X ALSO ADVISED ATC HE NEEDED TO DEV S OF J-64 DUE TO WX. X SUBSEQUENTLY REQUESTED FL310. X WAS CLRED TO MAINTAIN FL270, DUE TO THIRD ACFT AT FL280. THE MANEUVER APPEARED TO BE BOTH EXCESSIVE AND UNNECESSARY FROM MY PERSPECTIVE. IT ALSO COULD HAVE BEEN VERY DANGEROUS, HAD THE THIRD ACFT BEEN CLOSER.

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.