Hiller UH-12C N1348Z

Summary

On 6 September 1995 at about 16:06 local time, a Hiller UH-12C registered N1348Z was involved in an accident near Porterville, California, United States. 2 people were on board and 2 had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

6 September 1995 at 16:06

Classification

Accident

Location

Porterville, California, United States

Nearest airport

Porterville Municipal (PTV)

Coordinates

35.9595, -118.9202

Aircraft

Hiller UH-12C

Registration

N1348Z

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX95LA326

2 people had minor injuries.

the flight instructor's inadequate supervision of the flight; the dual student's improper use of the flight controls; and improper remedial action.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

THE DUAL STUDENT ATTEMPTED TO RAISE THE HELICOPTER TO A HOVER AND INADVERTENTLY APPLIED AFT CYCLIC. THE HELICOPTER BEGAN TO MOVE REARWARD AND THE DUAL STUDENT ABRUPTLY RAISED THE COLLECTIVE TO CORRECT THIS CONDITION. THE HELICOPTER CLIMBED TO 18 FEET ABOVE THE GROUND AND THE MAIN ROTOR RPM BEGAN TO DECAY. THE CFI ASSUMED CONTROL OF THE HELICOPTER AND LOWERED THE COLLECTIVE TO REGAIN MAIN ROTOR RPM, BUT WITHOUT SUCCESS. THE CFI THEN EXECUTED AN AUTOROTATION, BUT DUE TO THE DECAYING MAIN ROTOR RPM SUSTAINED A HARD LANDING. THE HELICOPTER DID NOT EXPERIENCE ANY PREIMPACT MALFUNCTIONS OF FAILURES.

Quoted verbatim from the NTSB record.