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19980709024399A

Accident · Substantial damage
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FAA accident report · Ayres S-2R · Pasco, WA · July 9, 1998

FAA Aviation Safety Information Portal

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Date
July 9, 1998 · 10:00 local
Place
Pasco, WA
Phase of flight
Forced/Precautionary Landing
Operating rules
Agricultural (Part 137)
Operator
WZKG
Damage
Substantial damage
Aircraft
N4996X
NTSB investigation
NTSBSEA98LA125
Reported as
Ayres S2R
Reported engine
Pratt & Whitney R1340*
People aboard
1
Fatal injuries
0
Pilot’s flight hours
15,000 total8,000 in this make and model350 in the last 90 days
N4996XRegistration cancelled Feb 7, 2012 · Rockwell International S-2RS/N 2138R · Built 1975Airframe modelRockwell International S-2REngine modelPratt & Whitney R1340 seriesReciprocating

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.

Lost power on liftoff. Dumped load landed potato field. Nosed over. Throttle connector worn out failed. (.4)the pilot reported that while taking off to the west and climbing through about 40 feet above ground, the engine went to idle. He stated that he dropped his chemical load and immediately landed in an open potato field. The landing roll was crosswise to the furrows and the aircraft ultimately nosed over. FAA on-site inspection revealed a disconnect of the throttle linkage just forward of the firewall where it attaches to a 90 degree bell-crank designed to translate forward/aft motion into left/right lateral motion. The threads on the bell-crank attach end of the longitudinal throttle tube were found to be heavily worn. (-23)aircraft lost power on take-off, dumped load, and landed straight ahead I potato field. The aircraft nosed over and came to rest on its top. The aircraft landed going across the potato rows instead of parallel to them contributing to the nosing over. The aircraft sustained damage to the fin, the top of the cabin, a bent propeller blade, and damage engine isolation mounts. The pilot exited the aircraft once it came to rest. There were no injuries or fires.

As the FAA filed it

LOST POWER ON LIFTOFF. DUMPED LOAD LANDED POTATO FIELD. NOSED OVER. THROTTLE CONNECTOR WORN OUT FAILED. (.4)THE PILOT REPORTED THAT WHILE TAKING OFF TO THE WEST AND CLIMBING THROUGH ABOUT 40 FEET ABOVE GROUND, THE ENGINE WENT TO IDLE. HE STATED THAT HE DROPPED HIS CHEMICAL LOAD AND IMMEDIATELY LANDED IN AN OPEN POTATO FIELD. THE LANDING ROLL WAS CROSSWISE TO THE FURROWS AND THE AIRCRAFT ULTIMATELY NOSED OVER. FAA ON-SITE INSPECTION REVEALED A DISCONNECT OF THE THROTTLE LINKAGE JUST FORWARD OF THE FIREWALL WHERE IT ATTACHES TO A 90 DEGREE BELL-CRANK DESIGNED TO TRANSLATE FORWARD/AFT MOTION INTO LEFT/RIGHT LATERAL MOTION. THE THREADS ON THE BELL-CRANK ATTACH END OF THE LONGITUDINAL THROTTLE TUBE WERE FOUND TO BE HEAVILY WORN. (-23)AIRCRAFT LOST POWER ON TAKE-OFF, DUMPED LOAD, AND LANDED STRAIGHT AHEAD I POTATO FIELD. THE AIRCRAFT NOSED OVER AND CAME TO REST ON ITS TOP. THE AIRCRAFT LANDED GOING ACROSS THE POTATO ROWS INSTEAD OF PARALLEL TO THEM CONTRIBUTING TO THE NOSING OVER. THE AIRCRAFT SUSTAINED DAMAGE TO THE FIN, THE TOP OF THE CABIN, A BENT PROPELLER BLADE, AND DAMAGE ENGINE ISOLATION MOUNTS. THE PILOT EXITED THE AIRCRAFT ONCE IT CAME TO REST. THERE WERE NO INJURIES OR FIRES.

NTSB investigation

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

NTSB SEA98LA125Accident · No injuriesLimited investigationFinal reportPasco, WASeparation of the throttle linkage which resulted in the loss of power. Factors include worn throttle linkage parts and the furrows in the plowed field which was the available field for the forced landing.Jul 9, 1998 · Substantial damage

Other reports on N4996X · 1

Matched to the same aircraft by N-number and date.

Accident 20110519008409ATakeoff: Departure Roll · Kahlotus, WAPilot attempted takeoff with strong quartering tailwind and lost control. Aircraft went partially off the right side of the runway, and then back up and all the way across the left side and off into a freshly plowed field. Went approximately 30 yards off the…May 19, 2011 · Substantial damage