CHI93LA041

NTSB accident investigation · Aero Commander 500-B · Mccook, NE · November 24, 1992

Accident · Serious injuriesLimited investigationFinal report
Date
November 23, 1992, 19:47 local (Nov 24, 1992, 01:47 UTC)
Place
Mccook, NE
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N777CMAero Commander 500-B
Weather
Instrument (IMC) · Night/dark
Status
Completed · report September 28, 1993
Report
Approved by Office Director
FAA report
19921123047649A
Case key
15630

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

On this page

Probable cause

The pilot's improper decision to depart in known adverse weather conditions. The icing conditions and structural ice were factors.

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 weatherClimb - to cruise
Weather condition - icing conditionsFactor
Planning/decision - improperPilot in commandCause
Flight into known adverse weather - attemptedPilot in commandCause
Loss of control - in flightCircling (ifr)
Wing - iceFactor
Stall - encounteredPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The accident airplane crashed on airport property after reporting the airport in sight during a night IFR approach. The pilot reported the weather at the time of departure was 500 feet overcast with visibility restricted to 1.5 miles in freezing drizzle. The pilot reported he was unable to reach his assigned altitude of 9000 feet because of structural icing. He also reported an uncommanded decrease in RPM in the left engine during the en route climb. He reported to ATC he could not maintain altitude and requested an 'immediate' return to his departure airport. The pilot reported the airplane stalled as he was turning from left base to final for the landing runway. He recovered from the stall and decided to 'place' the aircraft in a field. The pilot reported another stall, 'a few feet above the ground and crashed.' A post accident inspection revealed ice buildups on the leading edge of all airfoil surfaces and the underside of the wings. No mechanical defects were discovered in the left engine or propeller system.

Aircraft

Registration
N777CM
Reported as
Aero Commander 500-B
Category
Airplane
Serial number
500B-1179-92
Airframe hours
16,474
Engine
Lycoming IO-540-E1A5, 290 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Dewey Towner, doing business as Central Air Southwest
Registered owner
Central Air Sw
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · November 12, 1992 · 17 hours before
Destination
HSI · Hastings, NE
Flight plan
IFR
Airport
MCK · Mccook Municipal

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
27
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
3,010 total · 760 in this make and model · 2,730 as pilot in command · 235 in the last 90 days · 77 in the last 30 days

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
50° at 10 knots
Visibility
1 statute miles
Lowest ceiling
500 ft overcast
Temperature
28 °F, dew point 27 °F
Altimeter
29.00 inHg
Observed at
MCK, 1 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.