SEA91FA060

NTSB accident investigation · Cessna 172N · Bellingham, WA · March 6, 1991

Accident · FatalField investigationFinal report
Date
March 5, 1991, 19:30 local (Mar 6, 1991, 03:30 UTC)
Place
Bellingham, WA
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
CGIXICessna 172N
Weather
Instrument (IMC) · Night/dark
Status
Completed · report June 16, 1992
Report
Approved by Office Director
Case key
41306

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

VFR flight by the non-instrument rated pilot into instrument meteorological conditions (IMC), and his failure to maintain proper altitude and/or clearance from the mountainous terrain. Factors related to the accident were: darkness and the adverse weather and terrain conditions.

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.

In flight encounter with weatherCruise - normal
Light condition - dark nightFactor
Terrain condition - high terrainFactor
Weather condition - cloudsFactor
Weather condition - low ceilingFactor
Weather condition - fogFactor
Weather condition - snowFactor
Vfr flight into imc - inadvertentPilot in commandCause
Lack of total instrument timePilot in command
In flight collision with terrain/waterCruise
Terrain condition - mountainous/hillyFactor
Proper altitude - not maintainedPilot in commandCause

Analysis

The acft was 1 of 5 that were on a return trip from los angeles, CA, to abbotsford, british columbia, Canada. The flt crews had obtained wx info during stops at cresent city, CA, & newport, OR. After lndg at everett, WA, one of the flt crews filed a flt plan for all 5 acft. At that time, he was asked if he wanted a wx briefing, but he indcd they had already rcvd a brief for the route. Rprtdly, the plts also obtained wx info from a computer in the lobby of an FBO at everett. After depg everett on a ngt flt to abbotsford, the flts enctrd deteriorating wx with snow & clouds. The flt crews of 2 acft reversed course & lndd at an alternate arpt. The crew of a 3rd acft diverted, went over water, then contd en route. However, the 2 remaining acft (c-gixi & c-gjnm) collided with mountainous trrn abt 3 mi apart. C-gixi impacted on rough rocky trrn at an elev of abt 1200'. Abt 8 mi nw at Bellingham, WA (elev 158'), the 1950 wx was in part: 2100' bkn, 10 mi vis with rain, wind fm 240 deg at 6 KTS. The wreckage was fnd the next day cvrd with snow.

Aircraft

Registration
CGIXI
Reported as
Cessna 172N
Category
Airplane
Serial number
17267609
Airframe hours
6,577
Engine
Lycoming O-360-A4A, 180 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Trinity Western University
Last inspection
Continuous airworthiness · February 15, 1991 · 64 hours before
Departed
PAE · Everett, WA
Destination
CYXX · Abbotsford,Bc
Flight plan
VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
24
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
157 total · 60 in this make and model · 92 as pilot in command · 42 in the last 90 days · 19 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
240° at 6 knots
Temperature
37 °F, dew point 34 °F
Altimeter
30.00 inHg
Observed at
BLI, 8 nm away