Near midair collision.

Attributes
ACN	182007
Time
Date	199106
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hya
State Reference	MA
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pvd
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other descent other
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
ASRS Report	182007
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	other
Miss Distance	horizontal : 150 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At about am:15, we were climbing out of hynnis on a heading of 300 degrees to intercept the nantucket 341 degree right en route to bos. At the time, we were almost on the radial heading about 330 degrees. We had just finished the climb checklist. Ocean approach told us that we had traffic 1 1/2 mi at 9 O'clock, type and altitude unknown. While searching in the 9-11 O'clock, we saw another company. Light transport at our 12 O'clock, about 50' above us and much less than 1/4 mi. The first officer tried evasive action but the aircraft was well clear by the time. As I think of the size of the aircraft in the window, it must have been 100-200' away at most! I'm guessing that he was VFR and may have been in contact with hyannis tower. I thank the lord I'm still here! Although I'm against indiscriminate proliferation of arsa's and TCA's, busier airports need positive sep. 2 aircraft traveling 250 KTS each on a collision course give a pilot little time to see the other aircraft.

Original NASA ASRS Text

Title: NMAC.

Narrative: AT ABOUT AM:15, WE WERE CLBING OUT OF HYNNIS ON A HDG OF 300 DEGS TO INTERCEPT THE NANTUCKET 341 DEG R ENRTE TO BOS. AT THE TIME, WE WERE ALMOST ON THE RADIAL HDG ABOUT 330 DEGS. WE HAD JUST FINISHED THE CLB CHKLIST. OCEAN APCH TOLD US THAT WE HAD TFC 1 1/2 MI AT 9 O'CLOCK, TYPE AND ALT UNKNOWN. WHILE SEARCHING IN THE 9-11 O'CLOCK, WE SAW ANOTHER COMPANY. LTT AT OUR 12 O'CLOCK, ABOUT 50' ABOVE US AND MUCH LESS THAN 1/4 MI. THE F/O TRIED EVASIVE ACTION BUT THE ACFT WAS WELL CLR BY THE TIME. AS I THINK OF THE SIZE OF THE ACFT IN THE WINDOW, IT MUST HAVE BEEN 100-200' AWAY AT MOST! I'M GUESSING THAT HE WAS VFR AND MAY HAVE BEEN IN CONTACT WITH HYANNIS TWR. I THANK THE LORD I'M STILL HERE! ALTHOUGH I'M AGAINST INDISCRIMINATE PROLIFERATION OF ARSA'S AND TCA'S, BUSIER ARPTS NEED POSITIVE SEP. 2 ACFT TRAVELING 250 KTS EACH ON A COLLISION COURSE GIVE A PLT LITTLE TIME TO SEE THE OTHER ACFT.

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.