MKC85LA028

NTSB accident investigation · Cessna 421B · Mason City, IA · November 27, 1984

Accident · No injuriesLimited investigationFinal report
Date
November 27, 1984, 14:05 local (20:05 UTC)
Place
Mason City, IA
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N41097Cessna 421B
Weather
Instrument (IMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19841127066229A
Case key
33894

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
Weather condition - icing conditionsFactor
Preflight planning/preparation - improperPilot in commandCause
Anti-ice/deice system,empennage - inadequateFactor
Flight into known adverse weather - initiatedPilot in commandCause
Stall/mush - inadvertentPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The ATP PIC knew that he would be flying into area of surface icing. Boots on horizontal stabilizer did not remove ice. Over rwy at 30 ft, acft stalled & hit the rwy hard. Manufactorer states acft cannot be certified for flt into known icing. Deice and anti-ice equipment was installed at the factory during manufacture.

Aircraft

Registration
N41097
Reported as
Cessna 421B
Category
Airplane
Serial number
421B0447
Airframe hours
1,973
Engine
Continental GTSIO-520-H, 375 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Skytrak Aviation
Registered owner
A Liner 8 Aviation Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 11, 1984 · 14 hours before
Departed
MCW · Chicago, IL
Destination
MCW · Mason City, IA
Flight plan
IFR
Airport
MCW · Minicipal, runway 35, 6,504 × 150 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,104 total · 124 in this make and model · 1,942 as pilot in command · 62 in the last 90 days · 5 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
280° at 13 knots
Lowest ceiling
600 ft
Temperature
30 °F, dew point 30 °F
Altimeter
29.00 inHg
Observed at
MCW

FAA reports on this event · 1

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