Air carrier medium large transport altitude deviation excursion from clearance altitude in response ...

Attributes
ACN	191839
Time
Date	199110
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pvd
State Reference	RI
Altitude	msl bound lower : 5000 msl bound upper : 5800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pvd
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8000 flight time type : 3000
ASRS Report	191840
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 15000
ASRS Report	191840
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were at 5000 ft going into pud. We asked the controller if there was traffic at our 12 O'clock position and he said it was VFR at our 12 O'clock position and 3 mi. We started to look for it and the TCASII issued a yellow TA. Right after that in 2 seconds or less it issued a RA to climb at 1500 FPM above the traffic. I told the controller that we were climbing because of the alert. He said we were to maintain 5000 ft. I said we were climbing anyway because of the TCASII. We climbed to 5800 ft and then descended back to 5000 ft after the conflict. Everything else was normal supplemental information from acn 191840. Approach control was very busy and therefore we felt we did not get a timely descent to 3000 ft to begin approach. We got a TA about 600 ft below us. Coming toward us. I climbed immediately and turned slightly right. Approach said not to.

Original NASA ASRS Text

Title: ACR MLG ALT DEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.

Narrative: WE WERE AT 5000 FT GOING INTO PUD. WE ASKED THE CTLR IF THERE WAS TFC AT OUR 12 O'CLOCK POS AND HE SAID IT WAS VFR AT OUR 12 O'CLOCK POS AND 3 MI. WE STARTED TO LOOK FOR IT AND THE TCASII ISSUED A YELLOW TA. RIGHT AFTER THAT IN 2 SECONDS OR LESS IT ISSUED A RA TO CLB AT 1500 FPM ABOVE THE TFC. I TOLD THE CTLR THAT WE WERE CLBING BECAUSE OF THE ALERT. HE SAID WE WERE TO MAINTAIN 5000 FT. I SAID WE WERE CLBING ANYWAY BECAUSE OF THE TCASII. WE CLBED TO 5800 FT AND THEN DSNDED BACK TO 5000 FT AFTER THE CONFLICT. EVERYTHING ELSE WAS NORMAL SUPPLEMENTAL INFO FROM ACN 191840. APCH CTL WAS VERY BUSY AND THEREFORE WE FELT WE DID NOT GET A TIMELY DSCNT TO 3000 FT TO BEGIN APCH. WE GOT A TA ABOUT 600 FT BELOW US. COMING TOWARD US. I CLBED IMMEDIATELY AND TURNED SLIGHTLY R. APCH SAID NOT TO.

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.

Air carrier medium large transport altitude deviation excursion from clearance altitude in response to TCASII RA.