- Date
- July 10, 1968
- Place
- Royalston, MA · ROYALSTON, MA
- Injuries
- 2 fatal
- Phase of flight
- Uncontrolled descent
- Status
- Completed · report June 30, 1970
- Report
- Brief approved by the director
- Case key
- 109643
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-4665 68/7/10 ROYALSTON,MASS HELIO ACFT H-391B CR- 1 0 0 NONCOMMERCIAL PRIVATE, AGE 48, UNK/NR TIME - 1459 N28B PX- 1 0 0 PLEASURE/PERSONAL TRANSP TOTAL HOURS, UNK/NR IN DAMAGE-DESTROYED OT- 0 0 0 TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION OLD FORGE,NY OSTERVILLE,MASS TYPE OF ACCIDENT PHASE OF OPERATION AIRFRAME FAILURE: IN FLIGHT IN FLIGHT: UNCONTROLLED DESCENT PROBABLE CAUSE(S) PILOT IN COMMAND - CONTINUED FLIGHT INTO KNOWN AREAS OF SEVERE TURBULENCE PILOT IN COMMAND - SPATIAL DISORIENTATION PILOT IN COMMAND - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE FACTOR(S) WEATHER - THUNDERSTORM ACTIVITY WEATHER - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS MISCELLANEOUS ACTS,CONDITIONS - SEAT BELT NOT FASTENED MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT SKY CONDITION CEILING AT ACCIDENT SITE UNKNOWN/NOT REPORTED UNKNOWN/NOT REPORTED VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE UNKNOWN/NOT REPORTED THUNDERSTORM OBSTRUCTIONS TO VISION AT ACCIDENT SITE TYPE OF WEATHER CONDITIONS UNKNOWN/NOT REPORTED VFR TYPE OF FLIGHT PLAN NONE REMARKS- WITNESS STATED WX BRIEF RECEIVED.GEN DISINTERGRATION IN FLT.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-4665 68/7/10 ROYALSTON,MASS HELIO H-391B CR- 1 0 0 NONCOMMERCIAL PRIVATE, AGE 48, 2500 TIME - 1459 N28B PX- 1 0 0 PLEASURE/PERSONAL TRANSP TOTAL HOURS, UNK/NR IN DAMAGE-DESTROYED OT- 0 0 0 TYPE, NOT INSTRUMENT RATED. TYPE OF ACCIDENT PHASE OF OPERATION AIRFRAME FAILURE: IN FLIGHT IN FLIGHT: OTHER REMARKS- UNDER INVESTIGATION.
Aircraft · 2
- Registration
- N28B
- Reported as
- Helio H-391B
- Category
- Airplane
- Engine
- reciprocating
- Damage
- Destroyed
N28BRegistration cancelled Sep 21, 2012 · Helio H-391BAirframe modelHelio H-391BEngine modelLycoming GO-435C&D series
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
- Registration
- N28B
- Reported as
- Helio Acft H-391B
- Category
- Airplane
- Engine
- reciprocating
- Damage
- Destroyed
N28BRegistration cancelled Sep 21, 2012 · Helio H-391BAirframe modelHelio H-391BEngine modelLycoming GO-435C&D series
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.