DEN86LA037

NTSB accident investigation · Grumman AA-5A · Fort Collins, CO · December 1, 1985

Accident · No injuriesLimited investigationFinal report
Date
December 1, 1985, 11:20 local (18:20 UTC)
Place
Fort Collins, CO
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N991OUGrumman AA-5A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
16892

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 flightDescent - emergency
Wing - ice
Ice/frost removal from aircraft - not performedPilot in commandCause
Horizontal stabilizer surface - ice
Forced landingDescent - uncontrolled
In flight collision with objectLanding
Airport facilities,runway/landing area condition - rough/uneven

Analysis

The plt stated that during takeoff roll the acft used over twice the normal distance to rwy to become airborne. After becoming airborne, the stall warning sounded, and continued to sound until the forced landing when the plt said he couldnot maintain alt. The acft contacted a road sign aprx 1/2 mile from the rwy, prior to touchdown on the highway median, and later coming to rest off a highway exit. The entire surface of the wings and horizontal stabilizer were covered withrough ice which the plt stated he did not attempt to remove prior to flt. The plt also stated that the ice on the surface of the airfoils had no bearing on the accident.

Aircraft

Registration
N991OU
Reported as
Grumman AA-5A
Category
Airplane
Serial number
AA5A0310
Airframe hours
2,030
Engine
Lycoming O-320-E2G, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John D. Harding
Registered owner
John A. Allen
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 20, 1985 · 16 hours before
Departed
3V5 · Fort Collins, CO
Destination
CBF · Council Bluffs, IA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
53
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,151 total · 171 in this make and model · 1,100 as pilot in command · 20 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
-0 °F