ASN Wikibase Occurrence # 379226
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| Date: | Saturday 16 June 1984 |
| Time: | 13:30 LT |
| Type: |  Cessna 172K |
| Owner/operator: | Private |
| Registration: | N84103 |
| MSN: | 1725833 |
| Total airframe hrs: | 1704 hours |
| Engine model: | Lycoming O-320-E2D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Bridgeport, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Wichita Falls, TX (SPS |
| Fort Worth, TX (FTW | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING FLT, THE PLT NOTED A PROGRESSIVE LOSS OF ENG POWER. THE APPLICATION OF CARBURETOR HEAT HAD NO EFFECT. SUBSEQUENTLY, A LOUD NOISE OCCURRED & THE PLT SHUT DOWN THE ENG. DURING A FORCED LANDING THE NOSE GEAR COLLAPSED & THE ACFT NOSED OVER. AN EXAM REVEALED THAT THE #4 CONNECTING ROD HAD FAILED. INTERNAL DAMAGE WAS FOUND TO HAVE OCCURRED DUE TO LACK OF LUBRICATION. A FURTHER EXAM REVEALED THAT THE DIAPHRAGM OF AN OIL PRESSURE SWITCH HAD RUPTURED & ALLOWED DEPLETION OF THE ENG OIL SUPPLY. THE SWITCH, DATCON PN 40558-1, WAS INSTALLED ON 1/1/74, DIRECTLY INTO THE ENG BLOCK (TAPPED OIL GALLERY HOLE) & WAS USED IN CONNECTION WITH ELECTRICAL ACTION OF THE ACFT'S HOURMETER. DATCON SERVICE BULLETIN #1, SUBJECT: HAZARDOUS INSTALLATION OF OIL PRESSURE SWITCHES, DATED 1/2/75, NOT COMPLIED WITH.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB FTW84LA273
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 31-Mar-2024 17:07 | ASN Update Bot | Added |
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