DEN84FA121

NTSB accident investigation · Aero Commander 500-B · Miles City, MT · March 31, 1984

Accident · Serious injuriesField investigationFinal report
Date
March 31, 1984, 02:03 local (09:03 UTC)
Place
Miles City, MT
Injuries
1 serious
Damage
Destroyed
Phase of flight
Approach
Aircraft
N743WAero Commander 500-B
Weather
Instrument (IMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19840331065249A
Case key
16207

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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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 collision with terrain/waterApproach - faf/outer marker to threshold (ifr)
Terrain condition - mountainous/hillyFactor
Altimeter setting - improperPilot in commandCause
Weather condition - low ceilingFactor
Ifr procedure - improperPilot in commandCause
Weather condition - obscurationFactor
Proper altitude - belowPilot in commandCause
Light condition - dark nightFactor
Minimum descent altitude - not maintainedPilot in commandCause

Analysis

The plt said that when he called on the radio prior to the approach for an altimeter setting the reply was '30.11 or 30.12, something like that.' The acft altimeter was found after the accident set at 30.22 inches of mercury. The visibility was described as 1 and 1/2 Miles in snow showers. He continued the approach 'because minimums are one mile.' He descended outbound to 4500 ft. minimum procedure turn alt is 4700 ft MSL. The plt then descended to 3700 ft MSL as heapproached the VOR. Power was reduced to 17-18 inches of manifold pressure and airspeed reduced to 120 KTS. As the VOR was crossed he glanced at the altimeter and 'the hands were in the two o'clock position.' Landing gear was extended and approach flaps set. The plt said all seemed normal. He looked out the window and saw 'wispy clouds going by rapidly. Then there were the sounds of impact.' The next thing remembered was the sound of dripping gasoline. The plt said he crawled out of the cockpit window and wandered 'for a couple hours trying to chase down the search lights.'

Aircraft

Registration
N743W
Reported as
Aero Commander 500-B
Category
Airplane
Serial number
500B117389
Airframe hours
13,453
Engine
Lycoming IO-540-B1A5, 290 horsepower, reciprocating
Damage
Destroyed
Flight
Part 135
Registered owner
Combs Airways, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 23, 1984 · 12 hours before
Departed
BIL · Billings, MT
Flight plan
IFR
Airport
MLS · Frank Wiley, runway 12, 5,602 × 100 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
34
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
2,750 total · 394 in this make and model · 2,131 as pilot in command · 199 in the last 90 days · 66 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
100° at 12 knots
Lowest ceiling
1,500 ft
Temperature
32 °F, dew point 27 °F
Altimeter
30.00 inHg
Observed at
MLS, 2 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.