Aviation Crash Map

Hughes 269C N7441F

23 May 1990 · Rialto, California, United States · No injuries

Summary

On 23 May 1990 at about 18:10 local time, a Hughes 269C registered N7441F was involved in an accident near Rialto, California, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

The record

Date
at 18:10
Classification
Accident
Location
Rialto, California, United States
Nearest airport
Rialto (L67)
Coordinates
34.0997, -117.3806
Aircraft
Hughes 269C
Registration
N7441F
Category
Helicopter
Engines
1
Operator
Not recorded
Operating rule
Part 91: General Aviation
Purpose of flight
Unknown
Phase of flight
Not recorded
Aircraft damage
Substantial
Weather
VMC
Light
Day
NTSB number
LAX90LA187

People

Nobody was injured.

On board Died Serious Minor Uninjured
1 0 0 0 1

Probable cause

IMPROPER MAINTENANCE PROCEDURE BY MAINTENANCE PERSONNEL TO TROUBLESHOOT A REPORTED DEFICIENCY AND THE PILOT'S DECISION TO DEMONSTRATE THE VIBRATION, EXCEEDING THE DESIGN LIMITS OF THE HELICOPTER AND INDUCING GROUND RESONANCE. CONTRIBUTING TO THE ACCIDENT WAS THE LOW NITROGEN CHARGE OF THE LANDING GEAR DAMPERS.

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

Read the full NTSB narrative

THE HELICOPTER ENCOUNTERED GROUND RESONANCE DURING A MAINTENANCE TEST FLIGHT. THE CFI NOTICED AN UNUSUAL VIBRATION DURING STUDENT TRAINING. THE PILOT SUSPENDED THE TRAINING AND INFORMED MAINTENANCE. THE PILOT THEN ATTEMPTED TO DUPLICATE THE VIBRATION FOR ONE OF THE MAINTENANCE MECHANICS. AFTER TWO UNSUCCESSFUL ATTEMPTS, THE PILOT LANDED THE HELICOPTER ON A SLIGHT SLOPE. AFTER ONE SKID TOUCHED DOWN, THE HELICOPTER BEGAN TO VIBRATE. THE PILOT REDUCED THE THROTTLE AND THE VIBRATION BECAME MORE SEVERE. ACCORDING TO THE PILOT, THE HELICOPTER BEGAN TO DISINTEGRATE.

Quoted verbatim from the NTSB record.

Other Hughes 269 accidents

Date Aircraft Location Operator Outcome Died
9 May 1990 Hughes 269C
N58275
Fort Pierce, Florida, United States Flight Safety International Minor injuries -
23 May 1990 Hughes 269A
N8793F
La Verne, California, United States Randy Polous Minor injuries -
22 May 1990 Hughes 269A
N8888F
Bremerton, Washington, United States Eric P. Bass No injuries -
7 Jun 1990 Hughes 269B
N691RR
Paso Robles, California, United States Dolezal, Todd R. No injuries -
29 Jun 1990 Hughes 269C
N1102H
Carlsbad, California, United States Flight Trails Helicopters Minor injuries -
25 Sep 1990 Hughes 269C
N1094D
Jefferson, Maryland, United States New Horizon Aviation, Inc. Fatal 1

All 1,213 records for this type

Other accidents in this area

Date Aircraft Location Operator Outcome Died
15 Apr 1990 Cessna 180
N9394C
Soledad, California, United States - No injuries -
10 Oct 1990 Cessna 150
N68350
Riverside, California, United States PAR Flight No injuries -
17 Apr 1990 Piper PA46
N4387S
Paso Robles, California, United States Piper Aircraft Corp. No injuries -
7 Oct 1990 Cessna 182M
N70892
Bakersfield, California, United States - No injuries -
1 Apr 1990 Piper J-3
N7363H
Creston, California, United States - Minor injuries -
11 Oct 1990 Bell 47G4
N477JM
Merced, California, United States John W. Myers Serious injuries -

All 170,864 records in United States