NYC91FA006

NTSB accident investigation · Cessna 152 · Griswold, CT · October 8, 1990

Accident · FatalField investigationFinal report
Date
October 7, 1990, 21:10 local (Oct 8, 1990, 01:10 UTC)
Place
Griswold, CT
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N4708MCessna 152
Weather
Visual (VMC) · Night/dark
Status
Completed · report March 31, 1992
Report
Approved by Office Director
FAA report
19901007044209A
Case key
36770

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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Probable cause

A broken ehaust valve spring that resulted in a partial loss of power. Factors related to the accident were: darkness, lack of suitable terrain, and failure of the occupants to use their shoulder harnesses.

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.

Loss of engine power(partial) - mech failure/malfApproach
Engine assembly,valve,exhaust - failure,totalCause
Forced landingDescent - emergency
In flight collision with objectLanding
Light condition - dark nightFactor
Flight control,flap - false indication
Terrain condition - none suitableFactor
Object - tree(s)
Shoulder harness - not usedPilot in commandFactor
Shoulder harness - not usedPassengerFactor

Analysis

The plt & psgr were on a local flt at ngt. Psnl at the arpt noted that the rwy lights had been activated, but no acft was seen to land. The acft was fnd the next morning about 6 mi northeast of the arpt, where it had hit trees & crashed. An investigation revealed it had impacted trees, while in a shallow dscnt. A lack of rotational scarring was noted on the prop; only 1 blade was deformed & only 1 blade contained leading edge nicks. The flaps were fnd in the fully extended (30 deg) position, but the flap indicator showed only 10 degs of flaps. About 8 gal of fuel was found in each wing tank. A check of the eng revealed a lack of compression in the #3 cylinder due to a broken exhaust valve spring. No other pre-acdnt anomalies were fnd. The plt & psgr were not wearing their available shoulder harnesses.

Aircraft

Registration
N4708M
Reported as
Cessna 152
Category
Airplane
Serial number
15284479
Airframe hours
1,683
Engine
Lycoming O-235-L2C, 110 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Spence, David A.
Registered owner
Spence, David A
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 25, 1989 · 114 hours before
Departed
5B4 · Griswold
Destination
5B4
Airport
5B4 · Lake Side, runway 29, 2,520 × 50 ft, asphalt

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
54
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
430 total · 430 in this make and model · 395 as pilot in command · 23 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
150° at 5 knots
Visibility
6 statute miles
Lowest ceiling
10,000 ft broken
Observed at
GON, 15 nm away

FAA reports on this event · 1

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