NTSB Identification: NYC87FA027A.
The docket is stored on NTSB microfiche number 34041.
Accident occurred Thursday, October 30, 1986 in MANSFIELD, MA
Probable Cause Approval Date: 02/09/1988
Aircraft: PIPER PA-31-325, registration: N200GG
Injuries: 1 Serious,4 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

PIPER PA-31, N200GG, WAS ON A VFR FLT TO BOSTON, MA. THE PA-31 PLT CONTACTED BOSTON TRACON & ADZD HE HAD ATIS INFO & WOULD BE LNDG AT BOSTON. TRACON SUGGESTED A HDG & ALT OF 070 DEG & 2500' FOR RWY 33R & TOLD THE PLT TO MAINT VFR. AT APRX THE SAME TIME, A STUDENT & INSTRUCTOR (CFI) WERE ON A LCL INSTRUMENT TRAINING FLT IN THE AREA. THE STUDENT WAS IN THE L SEAT, WEARING A VIEW LIMITING DEVICE. THE 2 ACFT CONVERGED IN VFR WX & COLLIDED AT APRX 2600'. THE PA-31 WAS ON A NE HDG; THE CESSNA WAS ON A NW HDG. DRG IMPACT, THE TOP OF THE PA-31'S VERTICAL STABILIZER HIT THE LWR LEFT SIDE OF THE CESSNA'S FUSELAGE, INJURING THE STUDENT'S L LEG & DAMAGING THE CESSNA'S RGT MAIN GEAR. BOTH ACFT LNDD SAFELY, EXCEPT THECESSNA SWERVED OFF THE RWY DRG THE LNDG ROLL. THE PA-31 WAS SQUAWKING CODE 4640 WITH MODE C (ALT RPRTG). THE CESSNA WAS TRANSPONDER EQUIPPED, BUT DID NOT HAVE MODE C CAPABILITY. ITS TRANSPONDER WAS SET AT 1200, BUT WAS ACTUALLY SQUAWKING 1270. THE RADAR CTLR WAS UNABLE TO IDENTIFY THE CESSNA AS POTENTIAL CONFLICT. NO RADIO CONTACT BTN THE CESSNA & TRACON.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VISUAL LOOKOUT..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VISUAL LOOKOUT..INADEQUATE..PILOT OF OTHER AIRCRAFT

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