Close proximity GA cpr small transport in cruise IFR and GA small transport training near an airway.

Attributes
ACN	198920
Time
Date	199201
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : abe
State Reference	PA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute airway : abe
Flight Plan	IFR
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Small Transport
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 95 flight time total : 22000 flight time type : 1500
ASRS Report	198920
Person 2
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 2200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

IFR flight plan rdg to teb, being controled by allentown approach, direct to bwz VOR at 5000 ft. Suddenly a new voice came on with 'aircraft identify has twin small transport Y 12 O'clock, 1 mi at 5100 ft.' we looked and in 5 seconds saw that aircraft at just off our left nose in a gradual bank right turn which would just miss us and at our altitude. We made a slight right turn. I called allentown approach on the ground after trip. Spoke to the chief and the second controller who was working the twin small transport Y and a trainee who was working us. The controller said the twin small transport Y was a trainer and doing single engine work and was supposed to stay on south heading at 5500 ft, but he turned and dropped down to 5000 ft at which point we were warned of twin small transport Y at 12 O'clock and 1 mi. We did not file a near miss because no one took extreme evasive action.

Original NASA ASRS Text

Title: CLOSE PROX GA CPR SMT IN CRUISE IFR AND GA SMT TRAINING NEAR AN AIRWAY.

Narrative: IFR FLT PLAN RDG TO TEB, BEING CTLED BY ALLENTOWN APCH, DIRECT TO BWZ VOR AT 5000 FT. SUDDENLY A NEW VOICE CAME ON WITH 'ACFT IDENT HAS TWIN SMT Y 12 O'CLOCK, 1 MI AT 5100 FT.' WE LOOKED AND IN 5 SECONDS SAW THAT ACFT AT JUST OFF OUR L NOSE IN A GRADUAL BANK R TURN WHICH WOULD JUST MISS US AND AT OUR ALT. WE MADE A SLIGHT R TURN. I CALLED ALLENTOWN APCH ON THE GND AFTER TRIP. SPOKE TO THE CHIEF AND THE SECOND CTLR WHO WAS WORKING THE TWIN SMT Y AND A TRAINEE WHO WAS WORKING US. THE CTLR SAID THE TWIN SMT Y WAS A TRAINER AND DOING SINGLE ENG WORK AND WAS SUPPOSED TO STAY ON S HDG AT 5500 FT, BUT HE TURNED AND DROPPED DOWN TO 5000 FT AT WHICH POINT WE WERE WARNED OF TWIN SMT Y AT 12 O'CLOCK AND 1 MI. WE DID NOT FILE A NEAR MISS BECAUSE NO ONE TOOK EXTREME EVASIVE ACTION.

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.