20131214025849I

Incident · Minor damage

FAA incident report · Talmadge Michael J RV-9A · Carlsbad, CA · December 14, 2013

Date
December 14, 2013 · 10:53 local
Place
Carlsbad, CA
Phase of flight
Landing: Touchdown
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N79WT
Reported as
Talmadge Michael J RV-9A
People aboard
2
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Private pilot
Pilot’s flight hours
384 total250 in this make and model14 in the last 90 days

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.

Investigated nose landing gear incident on van's RV-9A experimental aircraft. During a short field "spot landing" on runway 18 at fallbrook airpark, CA (L18) the aircraft began to porpoise shortly after touch down. The pilot executed a balked landing/go-around procedure after the second porpoise. The nose gear strut and faring was slightly damaged during the balked landing maneuver.

A bystander who was on the ground at fallbrook took a picture of the nose gear and emailed the photo to a passenger on the aircraft. After reviewing the photo of the nose gear on the passengers iphone, the pilot elected to return and land at his home airport (Carlsbad-palomar, kcrq). The aircraft landed uneventfully on runway 24 at Carlsbad although the damaged nose wheel was bent enough to preclude a normal taxi. Ground crews assisted the pilot and the aircraft was towed to the pilots hangar for repairs.

The nose strut (leg) on vans rv-a series aircraft is a known weak design since the aircraft was originally designed as a conventional gear aircraft without a nose wheel. The nose wheel system was later added and is of minimal design to keep the tricycle -9A model similar in weight to the -9 conventional model.

Since 1988 there have been several manufacturer modifications to the nose gear strut and yoke which have resulted in issuing several service bulletins. Even so, there are other manufacturers that continue to design and sell "nose gear strut stiffeners" for tricycle model van's aircraft.

The pilot (and original builder of this aircraft) had installed a nose strut stiffener mechanism (kit) made by a company called "anti splat aero". The stiffener kit keeps the nose strut from bending backwards and this kit helped avoid a prop-strike and other costly damage to the aircraft in this incident. The modified nose gear sustained very minor damage to the nose gear and nose gear fairing during this incident.

As the FAA filed it

INVESTIGATED NOSE LANDING GEAR INCIDENT ON VAN'S RV-9A EXPERIMENTAL AIRCRAFT. DURING A SHORT FIELD "SPOT LANDING" ON RUNWAY 18 AT FALLBROOK AIRPARK, CA (L18) THE AIRCRAFT BEGAN TO PORPOISE SHORTLY AFTER TOUCH DOWN. THE PILOT EXECUTED A BALKED LANDING/GO-AROUND PROCEDURE AFTER THE SECOND PORPOISE. THE NOSE GEAR STRUT AND FARING WAS SLIGHTLY DAMAGED DURING THE BALKED LANDING MANEUVER.

A BYSTANDER WHO WAS ON THE GROUND AT FALLBROOK TOOK A PICTURE OF THE NOSE GEAR AND EMAILED THE PHOTO TO A PASSENGER ON THE AIRCRAFT. AFTER REVIEWING THE PHOTO OF THE NOSE GEAR ON THE PASSENGERS IPHONE, THE PILOT ELECTED TO RETURN AND LAND AT HIS HOME AIRPORT (CARLSBAD-PALOMAR, KCRQ). THE AIRCRAFT LANDED UNEVENTFULLY ON RUNWAY 24 AT CARLSBAD ALTHOUGH THE DAMAGED NOSE WHEEL WAS BENT ENOUGH TO PRECLUDE A NORMAL TAXI. GROUND CREWS ASSISTED THE PILOT AND THE AIRCRAFT WAS TOWED TO THE PILOTS HANGAR FOR REPAIRS.

THE NOSE STRUT (LEG) ON VANS RV-A SERIES AIRCRAFT IS A KNOWN WEAK DESIGN SINCE THE AIRCRAFT WAS ORIGINALLY DESIGNED AS A CONVENTIONAL GEAR AIRCRAFT WITHOUT A NOSE WHEEL. THE NOSE WHEEL SYSTEM WAS LATER ADDED AND IS OF MINIMAL DESIGN TO KEEP THE TRICYCLE -9A MODEL SIMILAR IN WEIGHT TO THE -9 CONVENTIONAL MODEL.

SINCE 1988 THERE HAVE BEEN SEVERAL MANUFACTURER MODIFICATIONS TO THE NOSE GEAR STRUT AND YOKE WHICH HAVE RESULTED IN ISSUING SEVERAL SERVICE BULLETINS. EVEN SO, THERE ARE OTHER MANUFACTURERS THAT CONTINUE TO DESIGN AND SELL "NOSE GEAR STRUT STIFFENERS" FOR TRICYCLE MODEL VAN'S AIRCRAFT.

THE PILOT (AND ORIGINAL BUILDER OF THIS AIRCRAFT) HAD INSTALLED A NOSE STRUT STIFFENER MECHANISM (KIT) MADE BY A COMPANY CALLED "ANTI SPLAT AERO". THE STIFFENER KIT KEEPS THE NOSE STRUT FROM BENDING BACKWARDS AND THIS KIT HELPED AVOID A PROP-STRIKE AND OTHER COSTLY DAMAGE TO THE AIRCRAFT IN THIS INCIDENT. THE MODIFIED NOSE GEAR SUSTAINED VERY MINOR DAMAGE TO THE NOSE GEAR AND NOSE GEAR FAIRING DURING THIS INCIDENT.