N2064

Substantial
None

Monocoupe Aircraft 110 SPECIAL S/N: A748

Accident Details

Date
Saturday, October 8, 1994
NTSB Number
SEA95LA004
Location
LANGLEY, WA
Event ID
20001206X02529
Coordinates
48.040481, -122.440330
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
1
Total Aboard
1

Probable Cause and Findings

CORROSION AND SUBSEQUENT FAILURE OF THE ELEVATOR HINGE ATTACH FITTING WELD. THIS ALLOWED THE ELEVATOR TO BEND AND IMPINGE UPON THE RUDDER, SUBSEQUENTLY JAMMING IT TO THE FULL RIGHT POSITION AND RENDERING THE AIRCRAFT IMPOSSIBLE TO CONTROL.

Aircraft Information

Registration
Make
MONOCOUPE AIRCRAFT
Serial Number
A748
Engine Type
Reciprocating
Year Built
1937
Model / ICAO
110 SPECIAL M110
Aircraft Type
Fixed Wing Single Engine
No. of Engines
1
Seats
2
FAA Model
110 SPECIAL

Registered Owner (Current)

Name
WESTERN ANTIQUE AEROPLANE & AUTOMOBILE MUSEUM
Address
1600 AIR MUSEUM RD
City
HOOD RIVER
State / Zip Code
OR 97031-9800
Country
United States

Analysis

On October 7, 1994, about 1800 hours Pacific daylight time, N2064, a Monocoupe 110 Special airplane, operated by Frederick E. Ludtke, Sr., Freeland, Washington, was substantially damaged during a forced landing into trees in Langley, Washington. The forced landing was precipitated by a flight control malfunction while descending. The commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed and no flight plan had been filed. The personal flight departed from Everett, Washington, and was conducted under 14 CFR 91.

According to the pilot, the airplane's rudder jammed into a full right deflection while the pilot was descending through 5,000 feet mean sea level and banking to the right. According to the pilot, "the result was a snap rolling entry into a right spin with the right rudder pedal in the full forward limit of travel." The pilot attempted to control the airplane by applying various levels of engine power and available flight controls. Full aircraft control could not be regained by the pilot. The airplane continued to descend in a bank and a "dramatic skid." The pilot stated that he decided to "slow the airplane down" and settle into trees. The airplane impacted trees and was substantially damaged.

Subsequent examination of the airplane revealed that the elevator hinge attach fitting had separated, allowing the elevator to partially detach from the airplane. An examination of the attach fitting revealed that the weld had failed. Corrosion was observed inside a void between the elevator hinge attach fitting base plate and the mating horizontal stabilizer spar.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# SEA95LA004