20000905012299A

Accident · Substantial damage

FAA accident report · Amtr M18LWILLIAMS · El Cajon, CA · September 5, 2000

Date
September 5, 2000 · 12:14 local
Place
El Cajon, CA
Airport
Gillespie Field Airport
Phase of flight
Final Approach
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N60BW
NTSB investigation
NTSBLAX00LA325
Reported as
Amtr M18LWILLIAMS
Reported engine
Lycoming O145*
People aboard
1
Fatal injuries
0
Pilot’s flight hours
790 total100 in this make and model

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) On 09-05-00, N60BW, an amateur built aircraft, departed see on a pleasure flight to L32. Upon return to see, N60BW received permission to execute a low pass down runway 17, joining left traffic for runway 27 lt. during this pass the vertical stabilizer and rudder assy failed and departed the a/c. the emergency landing was successful, with no further damaage to a/c or injuries to the pilot. Investigation revealed forward and aft vertical stabilizer attach points exhibited wood rot. (.4) on September 5, 2000, about 1214 hours pacific daylight time, a williams mite M18L, N60BW, owned and operated by the pilot, experienced the in-flight separation of its vertical stabilizer and rudder assemblies approaching the Gillespie field, san diego, California. Visual meteorological conditions prevailed at the time, and no flight plan was filed. The experimental airplane was substantially damaged, and the private pilot was not injured. The personal flight was performed under 14 CFR part 91, and originated from oceanside, California, at an unreported time. The pilot indicated that on final approach about 50 feet above ground level, the airplane's entire stabi lizer and rudder assemblies separated from the airplane, as a single unit. Thereafter, the airplane veered sharply to the right, and there was a strong tendency to roll inverted. The pilot regained control of the airplane, extended the landing gear, and landed on runway 17 without further mishap. The separated components were subsequently located on airport property. The federal aviation administration examined the components and reported observing evidence of dry rot on the fracture surfaces.

As the FAA filed it

(-23) ON 09-05-00, N60BW, AN AMATEUR BUILT AIRCRAFT, DEPARTED SEE ON A PLEASURE FLIGHT TO L32. UPON RETURN TO SEE, N60BW RECEIVED PERMISSION TO EXECUTE A LOW PASS DOWN RUNWAY 17, JOINING LEFT TRAFFIC FOR RUNWAY 27 LT. DURING THIS PASS THE VERTICAL STABILIZER AND RUDDER ASSY FAILED AND DEPARTED THE A/C. THE EMERGENCY LANDING WAS SUCCESSFUL, WITH NO FURTHER DAMAAGE TO A/C OR INJURIES TO THE PILOT. INVESTIGATION REVEALED FORWARD AND AFT VERTICAL STABILIZER ATTACH POINTS EXHIBITED WOOD ROT. (.4) ON SEPTEMBER 5, 2000, ABOUT 1214 HOURS PACIFIC DAYLIGHT TIME, A WILLIAMS MITE M18L, N60BW, OWNED AND OPERATED BY THE PILOT, EXPERIENCED THE IN-FLIGHT SEPARATION OF ITS VERTICAL STABILIZER AND RUDDER ASSEMBLIES APPROACHING THE GILLESPIE FIELD, SAN DIEGO, CALIFORNIA. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME, AND NO FLIGHT PLAN WAS FILED. THE EXPERIMENTAL AIRPLANE WAS SUBSTANTIALLY DAMAGED, AND THE PRIVATE PILOT WAS NOT INJURED. THE PERSONAL FLIGHT WAS PERFORMED UNDER 14 CFR PART 91, AND ORIGINATED FROM OCEANSIDE, CALIFORNIA, AT AN UNREPORTED TIME. THE PILOT INDICATED THAT ON FINAL APPROACH ABOUT 50 FEET ABOVE GROUND LEVEL, THE AIRPLANE'S ENTIRE STABI LIZER AND RUDDER ASSEMBLIES SEPARATED FROM THE AIRPLANE, AS A SINGLE UNIT. THEREAFTER, THE AIRPLANE VEERED SHARPLY TO THE RIGHT, AND THERE WAS A STRONG TENDENCY TO ROLL INVERTED. THE PILOT REGAINED CONTROL OF THE AIRPLANE, EXTENDED THE LANDING GEAR, AND LANDED ON RUNWAY 17 WITHOUT FURTHER MISHAP. THE SEPARATED COMPONENTS WERE SUBSEQUENTLY LOCATED ON AIRPORT PROPERTY. THE FEDERAL AVIATION ADMINISTRATION EXAMINED THE COMPONENTS AND REPORTED OBSERVING EVIDENCE OF DRY ROT ON THE FRACTURE SURFACES.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.