Near midair collision.

Attributes
ACN	310836
Time
Date	199507
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cyn airport : phl
State Reference	NJ
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	310836
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 50 vertical : 75
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

SID departure off phl runway 27L, climb to 5000 ft, turn left to 090 degrees, join the cyn 274 degree radial toward ditch intersection. Normally would already be cleared to climb to 10000 ft. Eastbound on cyn 274 degree radial, about 35 DME, cleared to climb to 10000 ft. Just started climb when departure control called traffic 10 O'clock, 3 mi, at I believe 5500 ft. TCASII advised 'monitor vertical speed.' began to level and TCASII advised 'descend, descend.' departure control advised 'turn right heading 130 degrees.' did not turn as traffic was at 10 O'clock and a right turn for us would have precluded any chance of visual contact with other aircraft. Started a descent as advised by TCASII, when captain in left seat obtained visual on other aircraft and evaded down and left. Missed aircraft by approximately 75 ft vertical (we passed above us).

Original NASA ASRS Text

Title: NMAC.

Narrative: SID DEP OFF PHL RWY 27L, CLB TO 5000 FT, TURN L TO 090 DEGS, JOIN THE CYN 274 DEG RADIAL TOWARD DITCH INTXN. NORMALLY WOULD ALREADY BE CLRED TO CLB TO 10000 FT. EBOUND ON CYN 274 DEG RADIAL, ABOUT 35 DME, CLRED TO CLB TO 10000 FT. JUST STARTED CLB WHEN DEP CTL CALLED TFC 10 O'CLOCK, 3 MI, AT I BELIEVE 5500 FT. TCASII ADVISED 'MONITOR VERT SPD.' BEGAN TO LEVEL AND TCASII ADVISED 'DSND, DSND.' DEP CTL ADVISED 'TURN R HDG 130 DEGS.' DID NOT TURN AS TFC WAS AT 10 O'CLOCK AND A R TURN FOR US WOULD HAVE PRECLUDED ANY CHANCE OF VISUAL CONTACT WITH OTHER ACFT. STARTED A DSCNT AS ADVISED BY TCASII, WHEN CAPT IN L SEAT OBTAINED VISUAL ON OTHER ACFT AND EVADED DOWN AND L. MISSED ACFT BY APPROX 75 FT VERT (WE PASSED ABOVE US).

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.