<< >> NASA ASRS Report 427380, February 1999

An FK100 departing iah received a TCASII RA and descended from assigned altitude. The climb rate of departing aircraft could result in a TCASII RA.

Attributes
ACN	427380
Time
Date	199902
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 3700 msl bound upper : 3900
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Navigation In Use	Other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Route In Use	departure other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
ASRS Report	427380
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared to take off on runway 15L and given an initial heading of 360 degrees, climb and maintain 4000 ft. Climbing through 3500 ft, tower started to hand us off then said to stay with him. Just prior to level off, and as we were rolling out on the 360 degree heading we received a TA. At the same time tower made a transmission that we were unable to hear due to the TCASII alert. This was followed shortly by an RA to descend. We saw the traffic visually and followed the RA. We descended about 200 ft to 3700 ft. The captain informed tower that we had responded to an RA. Tower acknowledged and sent us to departure frequency.

Related reports:

• A B757 crew, restr to 6000 ft, departing dfw, received a TCA...
• F900 crew received 2 TCASII RA's departing rdu.
• A departing B737 on radar vectors received a TCASII RA and p...
• An A319 crew, departing phx, received and responded to a des...
• A B757 crew, departing lgb, received 2 separate TCASII RA's.

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Original NASA ASRS Text

Title: AN FK100 DEPARTING IAH RECEIVED A TCASII RA AND DSNDED FROM ASSIGNED ALT. THE CLB RATE OF DEPARTING ACFT COULD RESULT IN A TCASII RA.

Narrative: WE WERE CLRED TO TAKE OFF ON RWY 15L AND GIVEN AN INITIAL HDG OF 360 DEGS, CLB AND MAINTAIN 4000 FT. CLBING THROUGH 3500 FT, TWR STARTED TO HAND US OFF THEN SAID TO STAY WITH HIM. JUST PRIOR TO LEVEL OFF, AND AS WE WERE ROLLING OUT ON THE 360 DEG HDG WE RECEIVED A TA. AT THE SAME TIME TWR MADE A XMISSION THAT WE WERE UNABLE TO HEAR DUE TO THE TCASII ALERT. THIS WAS FOLLOWED SHORTLY BY AN RA TO DSND. WE SAW THE TFC VISUALLY AND FOLLOWED THE RA. WE DSNDED ABOUT 200 FT TO 3700 FT. THE CAPT INFORMED TWR THAT WE HAD RESPONDED TO AN RA. TWR ACKNOWLEDGED AND SENT US TO DEP FREQ.

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.