19990407015309I

Incident · Minor damage

FAA incident report · Cessna 402B · Dallas, TX · April 7, 1999

Date
April 7, 1999 · 23:30 local
Place
Dallas, TX
Airport
Love
Phase of flight
Ground Taxi, Other Airplane
Operating rules
Air taxi and commuter (Part 135)
Operator
XGNA
Damage
Minor damage
Aircraft
N5421M
Reported as
Cessna 402B
Reported engine
Continental TSIO520B
People aboard
2
Fatal injuries
0

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.

Pilot and check airman were completing check ride iaw FAR 135.293. Pilot turned off 13L and was taxiing back to base and reached for flap handle and pulled gear handle instead. According to the pilot statements, the aircraft was in left turn, into head wind, flaps down, normal to low power settings 1000-1050 RPM when the gear safety switch failed and the right gear collapsed. The right propeller struck the ground and hte blades were bent forward indicating potential high power setting. Flap cable in the right wing root severed, lower right wing tip tank damaged, gear door damaged. An electrical test of the squat switch indicated a high reading of resistance when closed, and also failed the continuity test. The incident was attributed to pilot misjudgement and back-up system failure of the squat switch.

As the FAA filed it

PILOT AND CHECK AIRMAN WERE COMPLETING CHECK RIDE IAW FAR 135.293. PILOT TURNED OFF 13L AND WAS TAXIING BACK TO BASE AND REACHED FOR FLAP HANDLE AND PULLED GEAR HANDLE INSTEAD. ACCORDING TO THE PILOT STATEMENTS, THE AIRCRAFT WAS IN LEFT TURN, INTO HEAD WIND, FLAPS DOWN, NORMAL TO LOW POWER SETTINGS 1000-1050 RPM WHEN THE GEAR SAFETY SWITCH FAILED AND THE RIGHT GEAR COLLAPSED. THE RIGHT PROPELLER STRUCK THE GROUND AND HTE BLADES WERE BENT FORWARD INDICATING POTENTIAL HIGH POWER SETTING. FLAP CABLE IN THE RIGHT WING ROOT SEVERED, LOWER RIGHT WING TIP TANK DAMAGED, GEAR DOOR DAMAGED. AN ELECTRICAL TEST OF THE SQUAT SWITCH INDICATED A HIGH READING OF RESISTANCE WHEN CLOSED, AND ALSO FAILED THE CONTINUITY TEST. THE INCIDENT WAS ATTRIBUTED TO PILOT MISJUDGEMENT AND BACK-UP SYSTEM FAILURE OF THE SQUAT SWITCH.