Near midair collision.

Attributes
ACN	96691
Time
Date	198810
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : phl
State Reference	PA
Altitude	msl bound lower : 7500 msl bound upper : 8000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute airway : phl
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 210 flight time total : 14000 flight time type : 1500
ASRS Report	96691
Person 2
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 300 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Flight, 13 NM north of phl. Airport heading 110 degree at 8000' issued a right turn and descent to 6000' by phl approach. Second officer saw a light twin eastbound at 7500'. First officer stopped turn and pushed nose over missing twin by 300' (level). Twin was blanked from first officer by window post. Called phl approach after landing. They did not have the light twin until we called the near miss. Phl approach and this flight crew strongly recommend raising the TCA ceiling.

Original NASA ASRS Text

Title: NMAC.

Narrative: FLT, 13 NM NORTH OF PHL. ARPT HDG 110 DEG AT 8000' ISSUED A R TURN AND DSCNT TO 6000' BY PHL APCH. S/O SAW A LIGHT TWIN EBND AT 7500'. F/O STOPPED TURN AND PUSHED NOSE OVER MISSING TWIN BY 300' (LEVEL). TWIN WAS BLANKED FROM F/O BY WINDOW POST. CALLED PHL APCH AFTER LNDG. THEY DID NOT HAVE THE LIGHT TWIN UNTIL WE CALLED THE NEAR MISS. PHL APCH AND THIS FLT CREW STRONGLY RECOMMEND RAISING THE TCA CEILING.

Data retrieved from NASA's ASRS site as of August 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.