BE02 flight crew receives TCASII TA takes evasive action by reducing power and increasing descent.

Attributes
ACN	339427
Time
Date	199606
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	msl bound lower : 800 msl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : phl
Operator	common carrier : air carrier
Make Model Name	Beech 1900
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	arrival star : star
Flight Plan	IFR
Aircraft 2
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : initial
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 170 flight time total : 4200 flight time type : 500
ASRS Report	339427
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 150 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Acting as captain I was PF on the ILS runway 17. WX was reported several scattered layers and 5 mi in haze. ATC advised us of a traffic helicopter to our left 500 ft and below. Neither the first officer or I heard tower clear the piper for takeoff. I was inside flying the approach, occasionally looking out. The TCASII gave us a TA. At that point the first officer acquired the target and the so did I. The piper was nose high climbing across the approach path at approximately 800 ft. I reduced power to flight idle and descended to about 2 DOT low on GS. The first officer queried tower and tower asked the piper why he wasn't heading 40 degrees as assigned on takeoff. The piper responded that he had been cleared on course. Tower said that was not the case. In our confign descending on GS we would not have collided, but it was a very close pass. The piper appeared very defensive about his right to go on course. In phl I have never ever heard my aircraft cleared for takeoff proceed on course. The TCASII did its job, but did not issue the TA as soon as I would have liked.

Original NASA ASRS Text

Title: BE02 FLC RECEIVES TCASII TA TAKES EVASIVE ACTION BY REDUCING PWR AND INCREASING DSCNT.

Narrative: ACTING AS CAPT I WAS PF ON THE ILS RWY 17. WX WAS RPTED SEVERAL SCATTERED LAYERS AND 5 MI IN HAZE. ATC ADVISED US OF A TFC HELI TO OUR L 500 FT AND BELOW. NEITHER THE FO OR I HEARD TWR CLR THE PIPER FOR TKOF. I WAS INSIDE FLYING THE APCH, OCCASIONALLY LOOKING OUT. THE TCASII GAVE US A TA. AT THAT POINT THE FO ACQUIRED THE TARGET AND THE SO DID I. THE PIPER WAS NOSE HIGH CLBING ACROSS THE APCH PATH AT APPROX 800 FT. I REDUCED PWR TO FLT IDLE AND DSNDED TO ABOUT 2 DOT LOW ON GS. THE FO QUERIED TWR AND TWR ASKED THE PIPER WHY HE WASN'T HDG 40 DEGS AS ASSIGNED ON TKOF. THE PIPER RESPONDED THAT HE HAD BEEN CLRED ON COURSE. TWR SAID THAT WAS NOT THE CASE. IN OUR CONFIGN DSNDING ON GS WE WOULD NOT HAVE COLLIDED, BUT IT WAS A VERY CLOSE PASS. THE PIPER APPEARED VERY DEFENSIVE ABOUT HIS RIGHT TO GO ON COURSE. IN PHL I HAVE NEVER EVER HEARD MY ACFT CLRED FOR TKOF PROCEED ON COURSE. THE TCASII DID ITS JOB, BUT DID NOT ISSUE THE TA AS SOON AS I WOULD HAVE LIKED.

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.