Medium large transport reverses descent and climbs when a TCASII RA is received.

Attributes
ACN	229986
Time
Date	199301
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	msl bound lower : 3300 msl bound upper : 4300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl tower : oma
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 1200
ASRS Report	229986
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe conflict : ground less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Phl approach gave us a final heading to intercept 27R ILS and clearance down to 3000 ft. Approach also pointed out small aircraft traffic at 12 O'clock and 2 mi, below us. Approach said the small aircraft had a visual on us, but we reported we did not see him. We then received a TA followed by an RA commanding an immediate 2500 FPM climb. We followed the RA and changed altitude from about 3300 ft to 4300 ft. Approach questioned us as to why we followed our RA when the small aircraft said he had us in sight. If the small aircraft did indeed have us in sight, he sure cut it a little close. Close enough to give us an RA requiring a very steep climb!!!

Original NASA ASRS Text

Title: MLG REVERSES DSCNT AND CLBS WHEN A TCASII RA IS RECEIVED.

Narrative: PHL APCH GAVE US A FINAL HDG TO INTERCEPT 27R ILS AND CLRNC DOWN TO 3000 FT. APCH ALSO POINTED OUT SMA TFC AT 12 O'CLOCK AND 2 MI, BELOW US. APCH SAID THE SMA HAD A VISUAL ON US, BUT WE RPTED WE DID NOT SEE HIM. WE THEN RECEIVED A TA FOLLOWED BY AN RA COMMANDING AN IMMEDIATE 2500 FPM CLB. WE FOLLOWED THE RA AND CHANGED ALT FROM ABOUT 3300 FT TO 4300 FT. APCH QUESTIONED US AS TO WHY WE FOLLOWED OUR RA WHEN THE SMA SAID HE HAD US IN SIGHT. IF THE SMA DID INDEED HAVE US IN SIGHT, HE SURE CUT IT A LITTLE CLOSE. CLOSE ENOUGH TO GIVE US AN RA REQUIRING A VERY STEEP 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.