TCASII causes air carrier to climb 1300 ft above assigned altitude.

Attributes
ACN	241395
Time
Date	199305
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : gso
State Reference	NC
Altitude	msl bound lower : 29000 msl bound upper : 30300
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 220 flight time total : 10000 flight time type : 5000
ASRS Report	241395
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude
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	other

Narrative:

Level at FL290 issued TCASII TA followed almost immediately by an RA requiring a 1000 FPM climb. Crew complied and leveled 30300 when TCASII reported clear of traffic. ATC reported no loss of separation or apparent intruder aircraft however controller was working airspace FL290 and above while TCASII intruder displayed at FL270.

Original NASA ASRS Text

Title: TCASII CAUSES ACR TO CLB 1300 FT ABOVE ASSIGNED ALT.

Narrative: LEVEL AT FL290 ISSUED TCASII TA FOLLOWED ALMOST IMMEDIATELY BY AN RA REQUIRING A 1000 FPM CLB. CREW COMPLIED AND LEVELED 30300 WHEN TCASII RPTED CLR OF TFC. ATC RPTED NO LOSS OF SEPARATION OR APPARENT INTRUDER ACFT HOWEVER CTLR WAS WORKING AIRSPACE FL290 AND ABOVE WHILE TCASII INTRUDER DISPLAYED AT FL270.

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.