- Date
- November 15, 1991, 15:00 local (20:00 UTC)
- Place
- Florida City, FL
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N4506KWSK PZL Mielec PZL-M-18
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 27, 1993
- Report
- Approved by Office Director
- FAA report
- 19911115062789A
- Case key
- 33031
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Partial loss of engine power due to a loose intake manifold. Also, improper maintenance by an unknown person.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
After maneuvering, the eng experienced a near total loss of power. The plt applied full throttle but the eng failed to respond. He opened the valve to dump the chemical & while descending, the acft collided with rising terrain. The acft then came to rest in a field. Exam of the eng assy revealed that the intake manifold attached to the bottom of the oil sump was loose. This allowed an excessively lean fuel/air mixture which was verified by visual examination of the spark plugs. Review of the eng logbook revealed that the eng was installed on April 5, 1989. There were no entries indicating that the carburetor assy was removed since the eng was installed.
Aircraft
- Registration
- N4506K
- Reported as
- WSK PZL Mielec PZL-M-18
- Category
- Airplane
- Serial number
- 1Z011-05
- Engine
- WSK PZL-KALISZ, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Fable Spray Service, Inc.
- Registered owner
- Ives, Larry & Garry
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · April 1, 1991
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 57
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 6,731 total · 300 in this make and model · 6,000 as pilot in command · 40 in the last 90 days · 25 in the last 30 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 90° at 18 knots
- Lowest ceiling
- None
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.