MIA84IA077

NTSB incident investigation · Grumman G-73 · West Palm Beach, FL · February 10, 1984

Incident · No injuriesIncident investigationFinal report
Date
February 10, 1984, 11:50 local (16:50 UTC)
Place
West Palm Beach, FL
Injuries
14 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N2969Grumman G-73
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840210010739I
Case key
31035

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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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.

Airframe/component/system failure/malfunctionDescent
Flt control syst,elevator trim/tab control - failure,totalCause
Flight control,elevator - vibration

Analysis

The acft experienced an elevator trim loss, encountered extreme 'shaking and vibration' of control column and tail section fluttering while on descent to Palm Beach int'l arpt. Investigation revealed that the end of the actuator shaft failed at a rivet hole allowing the actuator to disconnect from the trim tab shaft assembly.

Aircraft

Registration
N2969
Reported as
Grumman G-73
Category
Airplane
Serial number
J27
Airframe hours
10,639
Engine
P&W PT6A-36, 750 lbs thrust, turbo prop
Damage
No damage
Flight
Part 135
Operator
Chalks International Airline
Registered owner
Chalks International Airline
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · February 7, 1984 · 259 hours before
Departed
NAS · Nassau, OF
Destination
PBI · Palm Beach, FL
Flight plan
VFR
Airport
West Palm Beach Int'L

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
30
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
4,000 total · 2,000 in this make and model · 250 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 12 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 72 °F
Altimeter
30.00 inHg
Observed at
PBI, 30 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N2969 · 3

Matched to the same aircraft by N-number and date.