FTW99LA068

NTSB accident investigation · Waco YMF-5 · Edmond, OK · January 21, 1999

Accident · No injuriesLimited investigationFinal report
Date
January 21, 1999, 16:30 local (22:30 UTC)
Place
Edmond, OK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N19YWaco YMF-5
Weather
Visual (VMC) · Day
Status
Completed · report April 18, 2001
Report
Approved by Office Director
FAA report
19990121009059A
Case key
45647

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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Probable cause

The pilot's failure to attain the proper touchdown point due to excessive airspeed and his failure to abort the landing. Factors were the pilot's excessive braking and the short, grass runway.

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 - on ground/waterLanding - roll
Airspeed(vref) - exceededPilot in commandCause
Aborted landing - not performedPilot in commandCause
Nose overLanding - roll
Brakes(normal) - excessivePilot in commandFactor
Airport facilities,runway/landing area condition - short runway/landing areaFactor
Airport facilities,runway/landing area condition - grassFactor

Analysis

The pilot stated that he landed fast and the tail-wheel equipped airplane started to float. When the pilot applied brake pressure the airplane started to skid. The pilot then released the brake pressure; however, he thought he was getting too close to the end of the 2,400 foot long grass strip, so he applied 'heavy' braking. Subsequently, the vintage airplane nosed over.

Factual narrative

On January 21, 1999, approximately 1630 central standard time, a Waco YMF-5 tail-wheel equipped airplane, N19Y, was substantially damaged when it nosed over on landing at a private grass air strip near Edmond, Oklahoma. The non-instrument rated private pilot, who was the sole occupant, was not injured. The airplane was registered to a private individual. Visual meteorological conditions prevailed and a flight plan was not filed for the Title 14 CFR Part 91 personal flight which originated at 1600 from the Guthrie Municipal Airport near Guthrie, Oklahoma.

During a telephone interview conducted by the investigator-in-charge, the pilot stated that he was repositioning the vintage biplane to the owner's private grass air strip. The pilot made two prior approaches to the landing strip to "get a feel for the winds and how to approach over some power lines." On the third attempt the pilot touched down "fast and started to float." The pilot started to "get on the brakes, and the airplane started to skid." The pilot then released the brake pressure; however, he thought that he was getting too close to the end of the 2,400 foot long runway so he applied "heavy braking" and subsequently nosed over.

The 933 hour pilot added that at the time of the accident, he had accumulated 47 hours in the accident airplane.

The nearest weather observation facility is the Will Rogers World Airport near Oklahoma City, Oklahoma, which is 19 miles south of Edmond, Oklahoma. At 1656 the wind was reported to be from 190 degrees at 6 knots. The pilot stated that the condition of the grass air strip at the time of the accident was dry.

Examination of the airplane by a FAA inspector revealed that the empenage, engine mounts, and propeller were bent and the top wing spar was broken. The FAA inspector stated that he could find no anomalies with the vintage airplane. The pilot, who is also a certified mechanic, stated that there were no mechanical problems with the brakes.

Aircraft

Registration
N19Y
Reported as
Waco YMF-5
Category
Airplane
Serial number
5015
Airframe hours
557
Engine
Jacobs R-755-B2M, 275 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mitchell L. Madison
Registered owner
Spirit Wing Aviation
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 17, 1998 · 23 hours before
Departed
GOK · Guthrie, OK
Destination
NONE · OK
Airport
NONE · Private

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Rear
Flight hours
933 total · 47 in this make and model · 805 as pilot in command · 44 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 6 knots
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
63 °F, dew point 36 °F
Altimeter
29.00 inHg
Observed at
OKC, 19 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.