20010107035179A

Accident · Substantial damage

FAA accident report · Mooney M20C · Jacksonville, FL · January 7, 2001

Date
January 7, 2001 · 15:12 local
Place
Jacksonville, FL
Airport
Jacksonville International
Phase of flight
To Init Climb(1st Pwr Reduct)
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N6807N
NTSB investigation
NTSBMIA01LA057
Reported as
Mooney M20C
Reported engine
Lycoming O360A1D
People aboard
2
Fatal injuries
0
Pilot’s flight hours
7,500 total

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) Mooney lost elevator control after completing a touch and go sequence. As the acft rotated and the pilot applied full throttle, the elevator control rod end pulled loose from the elevator attachment point. The aircraft severely pitched up to an uncontrollable attitude before it started back down approx. 400 feet AGL. The aircraft nose rotated to a critical nose down attitude to approx. 100 feet AGL before starting back up. The pilot gained partial control of the aircraft by applying applicable power to the engine to maintain a near stable altitude of appro. 200 feet AGL. The aircraft had an uncontrollable slight turn to the left approx. 3 to 5 degrees per minute. The pilot initiated a descent approx. 100 feet per minute in a left turn to landing. (.4) according to the pilot, following power application after his first touch and go landing, the aircraft assumed an extremely nose high attitude, and he realized he had no pitch control, limited rudder control, and full aileron control. He was able to control pitch attitude with throttle setting, and conducted an emergency landing in a field adjacent to the airport, sus taining substantial damage. Postcrash examination revealed a disconnect in the pitch controls at the aft pitch control rod-end-to-bellcrank connection in the tailcone. Examination of the components revealed that the pitch control rod-end eye was missed when the connecting bolt was pushed through the bellcrank side plate holes. When the nut was fitted to the bolt and tightened, the result was a connection that was only a "squeezed", friction fit. About 12 flight hours before the accident, on October 24, 2000, the aircraft underwent a 100-hour inspection, at which time the following was entered in the logbook, "checked all control push rods and rod end bearings. Lubricated flight controls". On April 24, 1980, Mooney aircraft corporation recognized a potential for a misconnection between the rod end and the bellcrank and promulgated service instruction M20-44, which had not been accomplished on this aircraft.

As the FAA filed it

(-23) MOONEY LOST ELEVATOR CONTROL AFTER COMPLETING A TOUCH AND GO SEQUENCE. AS THE ACFT ROTATED AND THE PILOT APPLIED FULL THROTTLE, THE ELEVATOR CONTROL ROD END PULLED LOOSE FROM THE ELEVATOR ATTACHMENT POINT. THE AIRCRAFT SEVERELY PITCHED UP TO AN UNCONTROLLABLE ATTITUDE BEFORE IT STARTED BACK DOWN APPROX. 400 FEET AGL. THE AIRCRAFT NOSE ROTATED TO A CRITICAL NOSE DOWN ATTITUDE TO APPROX. 100 FEET AGL BEFORE STARTING BACK UP. THE PILOT GAINED PARTIAL CONTROL OF THE AIRCRAFT BY APPLYING APPLICABLE POWER TO THE ENGINE TO MAINTAIN A NEAR STABLE ALTITUDE OF APPRO. 200 FEET AGL. THE AIRCRAFT HAD AN UNCONTROLLABLE SLIGHT TURN TO THE LEFT APPROX. 3 TO 5 DEGREES PER MINUTE. THE PILOT INITIATED A DESCENT APPROX. 100 FEET PER MINUTE IN A LEFT TURN TO LANDING. (.4) ACCORDING TO THE PILOT, FOLLOWING POWER APPLICATION AFTER HIS FIRST TOUCH AND GO LANDING, THE AIRCRAFT ASSUMED AN EXTREMELY NOSE HIGH ATTITUDE, AND HE REALIZED HE HAD NO PITCH CONTROL, LIMITED RUDDER CONTROL, AND FULL AILERON CONTROL. HE WAS ABLE TO CONTROL PITCH ATTITUDE WITH THROTTLE SETTING, AND CONDUCTED AN EMERGENCY LANDING IN A FIELD ADJACENT TO THE AIRPORT, SUS TAINING SUBSTANTIAL DAMAGE. POSTCRASH EXAMINATION REVEALED A DISCONNECT IN THE PITCH CONTROLS AT THE AFT PITCH CONTROL ROD-END-TO-BELLCRANK CONNECTION IN THE TAILCONE. EXAMINATION OF THE COMPONENTS REVEALED THAT THE PITCH CONTROL ROD-END EYE WAS MISSED WHEN THE CONNECTING BOLT WAS PUSHED THROUGH THE BELLCRANK SIDE PLATE HOLES. WHEN THE NUT WAS FITTED TO THE BOLT AND TIGHTENED, THE RESULT WAS A CONNECTION THAT WAS ONLY A "SQUEEZED", FRICTION FIT. ABOUT 12 FLIGHT HOURS BEFORE THE ACCIDENT, ON OCTOBER 24, 2000, THE AIRCRAFT UNDERWENT A 100-HOUR INSPECTION, AT WHICH TIME THE FOLLOWING WAS ENTERED IN THE LOGBOOK, "CHECKED ALL CONTROL PUSH RODS AND ROD END BEARINGS. LUBRICATED FLIGHT CONTROLS". ON APRIL 24, 1980, MOONEY AIRCRAFT CORPORATION RECOGNIZED A POTENTIAL FOR A MISCONNECTION BETWEEN THE ROD END AND THE BELLCRANK AND PROMULGATED SERVICE INSTRUCTION M20-44, WHICH HAD NOT BEEN ACCOMPLISHED ON THIS AIRCRAFT.

NTSB investigation

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