Air carrier X had near midair collision with small transport Y. See and avoid concept.

Attributes
ACN	132561
Time
Date	199001
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : abe
State Reference	PA
Altitude	msl bound lower : 5000 msl bound upper : 5200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : abe
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 2000
ASRS Report	132561
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac
Independent Detector	other controllera
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 200 vertical : 200
Supplementary
Primary Problem	Ambiguous

Narrative:

Allentown, PA approach control working air carrier X from phl to hpn. Controller gave turn direct stw VOR. Just as turn was started, controller called traffic 'small transport Y at 12 O'clock, opp direction 5200' descending.' I looked up and there he was. We both evaded right. Asked controller if he was working the small transport. Confirmed he was. No explanation asked for--none offered.

Original NASA ASRS Text

Title: ACR X HAD NMAC WITH SMT Y. SEE AND AVOID CONCEPT.

Narrative: ALLENTOWN, PA APCH CTL WORKING ACR X FROM PHL TO HPN. CTLR GAVE TURN DIRECT STW VOR. JUST AS TURN WAS STARTED, CTLR CALLED TFC 'SMT Y AT 12 O'CLOCK, OPP DIRECTION 5200' DSNDING.' I LOOKED UP AND THERE HE WAS. WE BOTH EVADED RIGHT. ASKED CTLR IF HE WAS WORKING THE SMT. CONFIRMED HE WAS. NO EXPLANATION ASKED FOR--NONE OFFERED.

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.