Accident Cessna 421C N3911C,
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ASN Wikibase Occurrence # 41524
 
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Date:Saturday 2 September 1995
Time:12:16 LT
Type:Silhouette image of generic C421 model; specific model in this crash may look slightly different    
Cessna 421C
Owner/operator:Charles G. May
Registration: N3911C
MSN: 421C-0138
Engine model:Continental GTSIO-520-H
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Destroyed
Category:Accident
Location:Phoenix, AZ -   United States of America
Phase: Approach
Nature:Private
Departure airport:, AZ (KDVT)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The pilot was cleared to land, and while on short final the airplane was observed to roll right then left into a yaw and then descend nose down into a parking lot. Witnesses reported the airplane being very low on final approach. According to the pilot's wife, his last flight was about 83 days prior to the accident. No current logbook or other maintenance-type records were recovered except for an invoice. The invoice was dated 12/20/94, and was for an annual inspection and for the replacement of six fuel inlet float valves in compliance with an airworthiness directive. Postaccident examination of the engines, propellers, and airframe components were conducted, with no discrepancies found. Symmetrical power signatures were observed on both propellers. An autopsy revealed mild focal patchy inflamation and mild cardiomegaly, and enlargement of the heart with focal patchy replacement fibrosis. Toxicology revealed Diphenhydramine, Naproxin, acetaminophen, and Salicylate in the blood and the urine at therapeutic levels. Diphenhydramine, at therapeutic levels, causes drowsiness.

Probable Cause: The pilot's failure to maintain positive aircraft control, a proper airspeed and fly a proper approach path during final approach. Contributing factors to the accident were the pilot's physiological condition, impairment as a result of using a sedating medication, and lack of recent experience.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX95FA321
Status: Investigation completed
Duration: 1 year and 5 months
Download report: Final report

Sources:

NTSB LAX95FA321

Location

Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
09-Apr-2024 12:23 ASN Update Bot Updated [Time, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Departure airport, Source, Narrative, Category, Accident report]

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