Medium large transport aircraft near midair collision TCASII. ATC provided TA, but thought there would be no conflict. TCASII RA ensued and reporter took evasive action.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	344063
Time
Date	199608
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zhu airport : iah
State Reference	TX
Altitude	msl bound lower : 10000 msl bound upper : 10700
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	arrival other arrival star : star enroute airway : zhu
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	PA-60 601/601P Aerostar
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 6000
ASRS Report	344063
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 500 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

ATC advised 20 NM from gland that an aerostar was approaching gland at 10000 ft from north (we were approaching from west) but no conflict would occur even though we were to cross gland at 10000 ft. 1 NM from gland we received 'traffic' advisory from TCASII followed immediately by RA demanding climb. Immediate climb initiated. We climbed to 10500 ft to 10700 ft when 'clear of traffic' was given by TCASII. Then we descended back to 10000 ft. First officer saw aircraft pass beneath us left to right during climb.

Original NASA ASRS Text

Title: MLG ACFT NMAC TCASII. ATC PROVIDED TA, BUT THOUGHT THERE WOULD BE NO CONFLICT. TCASII RA ENSUED AND RPTR TOOK EVASIVE ACTION.

Narrative: ATC ADVISED 20 NM FROM GLAND THAT AN AEROSTAR WAS APCHING GLAND AT 10000 FT FROM N (WE WERE APCHING FROM W) BUT NO CONFLICT WOULD OCCUR EVEN THOUGH WE WERE TO CROSS GLAND AT 10000 FT. 1 NM FROM GLAND WE RECEIVED 'TFC' ADVISORY FROM TCASII FOLLOWED IMMEDIATELY BY RA DEMANDING CLB. IMMEDIATE CLB INITIATED. WE CLBED TO 10500 FT TO 10700 FT WHEN 'CLR OF TFC' WAS GIVEN BY TCASII. THEN WE DSNDED BACK TO 10000 FT. FO SAW ACFT PASS BENEATH US L TO R DURING CLB.

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.