N924MDCESSNA 421B 1991-03-12 NTSB Accident Report

Substantial
Serious

CESSNA 421B S/N: 421B0427

Summary

On March 12, 1991, a Cessna 421B (N924MD) was involved in an accident near Tucson, AZ. The accident resulted in 3 serious injuries, 3 minor injuries. The aircraft sustained substantial damage.

The National Transportation Safety Board determined the probable cause of this accident to be: THE FATIGUE FAILURE OF THE RIGHT ENGINE TURBO EXHAUST CLAMP, AND, THE FAILURE OF THE FLYING PILOT TO COMPLETE THE SINGLE ENGINE EMERGENCY PROCEDURES IN A TIMELY MANNER. A FACTOR IN THE ACCIDENT WAS THE FAILURE OF THE PILOT IN COMMAND TO ADEQUATELY SUPERVISE THE CONDUCT OF THE FLIGHT.

This accident is documented in NTSB report LAX91LA129. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N924MD.

Accident Details

Date
Tuesday, March 12, 1991
NTSB Number
LAX91LA129
Location
TUCSON, AZ
Event ID
20001212X16630
Coordinates
32.150413, -110.930671
Aircraft Damage
Substantial
Highest Injury
Serious
Fatalities
0
Serious Injuries
3
Minor Injuries
3
Uninjured
0
Total Aboard
6

Probable Cause and Findings

THE FATIGUE FAILURE OF THE RIGHT ENGINE TURBO EXHAUST CLAMP, AND, THE FAILURE OF THE FLYING PILOT TO COMPLETE THE SINGLE ENGINE EMERGENCY PROCEDURES IN A TIMELY MANNER. A FACTOR IN THE ACCIDENT WAS THE FAILURE OF THE PILOT IN COMMAND TO ADEQUATELY SUPERVISE THE CONDUCT OF THE FLIGHT.

Aircraft Information

Registration
Make
CESSNA
Serial Number
421B0427
Engine Type
Reciprocating
Year Built
1973
Model / ICAO
421B C421
Aircraft Type
Fixed Wing Multi Engine
No. of Engines
2

Registered Owner (Historical)

Name
SALE REPORTED
Address
NONE
Status
Deregistered
City
XXX
State / Zip Code
OK 73125
Country
United States

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# LAX91LA129