NYC87DNC07

NTSB accident investigation · Mcculloch Monerai "S" · Springfield, VT · July 5, 1987

Accident · FatalFinal report
Date
July 5, 1987, 14:50 local (18:50 UTC)
Place
Springfield, VT
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N54MSMcculloch Monerai "S"
Weather
Visual (VMC) · Day
Status
Completed · report April 24, 1989
Report
Approved by Office Director
FAA report
19870705033989A
Case key
30453

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionManeuvering
Aircraft weight and balance - improperPilot in commandFactor
Weather condition - updraftFactor
Wing,spar - failure,totalCause
Design stress limits of aircraft - exceededPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The monerai 's' (N54MS, a pwrd glider) experienced an inflt failure of the left wing spar & crashed. An investigation revealed the acft was being operated in excess of its max gross wt limit of 450 lbs. The plt of an unpowered monerai said he & 3 others (including the plt of N54MS) were flying in a thermal when he noted a sudden, sharp 'up-gust.' He described this 'up-gust' as being stronger than any he had ever experienced in 5 yrs of flying his glider. He had seen N54MS in the same thermal, but was not observing it when the acdnt occurred. A ground witness saw N54MS descending out of control with the appearance of both wings pointing upward. A metallurgical exam revealed the left wing spar had failed from overload.

Aircraft

Registration
N54MS
Reported as
Mcculloch Monerai "S" (MONERAI "S)
Category
Glider, amateur-built
Serial number
0006
Airframe hours
255
Engine
Zenoah, 18 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Garland J. Mcculloch
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 12, 1987 · 15 hours before
Departed
MHT · Manchester, NH

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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
61
Certificate
Private
Seat
Center
Toxicology
Performed
Flight hours
285 total · 225 in this make and model · 225 as pilot in command · 14 in the last 90 days · 7 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
25 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point -0 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.