DEN91LA106

NTSB accident investigation · Cessna 210B · Aspen, CO · August 1, 1991

Accident · Serious injuriesLimited investigationFinal report
Date
August 1, 1991, 13:55 local (19:55 UTC)
Place
Aspen, CO
Injuries
2 serious, 1 minor
Damage
Destroyed
Phase of flight
Approach
Aircraft
N9711XCessna 210B
Weather
Visual (VMC) · Day
Status
Completed · report March 10, 1993
Report
Approved by Office Director
FAA report
19910801031149A
Case key
18118

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

A pilot induced inadvertent stall. Factors were: the pilot's failure to ascertain the landing gear was down and locked in a timely manner, a low (fluid) level in hydraulic reservoir, causing the hydraulic pump to fluctuate (cavitate), and the pilot's attention being diverted.

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 flightGo-around (vfr)
Gear down and locked - not attainedFactor
Hydraulic system,reservoir - low levelFactor
Hydraulic system,pump - fluctuatingFactor
Go-around - initiatedPilot in command
Diverted attentionPilot in commandFactor
Aircraft performance,climb capability - exceeded
Stall - inadvertentPilot in commandCause
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The pilot did not get a landing gear down and locked indication after being cleared to land. During the go around, the pilot attempted to turn to avoid buildings and the airplane stalled and crashed inverted into a tree. There was no evidence of hydraulic fluid leakage. Functional testing of

Aircraft

Registration
N9711X
Reported as
Cessna 210B
Category
Airplane
Serial number
21058011
Engine
Continental IO-470S-1B, 260 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Muller, Francis J.
Registered owner
Muller, Francis J.
Departed
MLF · Milford, UT
Airport
ASE · Aspen-Pitkin C. Sardy Fie, runway 15, 7,003 × 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
50
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Flight hours
602 total · 165 in this make and model · 15 in the last 90 days · 6 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 8 knots
Visibility
20 statute miles
Lowest ceiling
6,000 ft broken
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

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