DEN84LA028

NTSB accident investigation · Cessna 170B · Kalispell, MT · November 21, 1983

Accident · No injuriesLimited investigationFinal report
Date
November 21, 1983, 08:30 local (15:30 UTC)
Place
Kalispell, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N3747CCessna 170B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
16292

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

On this page

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 control - in flightApproach - vfr pattern - final approach
Anti-ice/deice system,pitot heat - lack ofFactor
Preflight planning/preparation - inadequatePilot in commandCause
Wing - iceFactor
Operation with known deficiencies in equipment - performedPilot in commandCause
Judgment - poorPilot in commandCause
Stall - inadvertentPilot in commandCause
Weather evaluation - inaccuratePilot in commandCause
UndershootLanding - flare/touchdown

Analysis

The acft landed hard just short of the rwy after the plt exprienced icing problems in flt. The airspeed indicator stopped working in flt so the plt was attempting a landing and says he also lost engine power at about 30 ft in the air during the flare for landing. According to the operator who examined the acft the wings contained ice that had streaks or marks on it as if someone tried to remove it. There was enough left however to affect the lifting qualities of the wing, no evidence was found of an engine malfunction.

Aircraft

Registration
N3747C
Reported as
Cessna 170B
Category
Airplane
Serial number
26517
Airframe hours
1,500
Engine
Continental C-145-2, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Ferry · Part 91
Registered owner
Robert J. Brock
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 1, 1983
Destination
Cranbrock
Flight plan
VFR
Airport
S27 · Kalispell City, runway 31, 3,600 × 70 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
45
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
341 total · 20 in this make and model · 274 as pilot in command · 20 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 10 knots
Visibility
30 statute miles
Lowest ceiling
9,000 ft broken
Temperature
28 °F, dew point 21 °F
Altimeter
29.00 inHg
Observed at
FCA, 10 nm away