Beechcraft 1900D N29YV

Summary

On 28 March 1996 at about 11:16 local time, a Beechcraft 1900D registered N29YV was involved in an incident near Jacksonville, Florida, United States. 2 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

28 March 1996 at 11:16

Classification

Incident

Location

Jacksonville, Florida, United States

Nearest airport

Jacksonville Intl (JAX)

Coordinates

30.4906, -81.6701

Aircraft

Beechcraft 1900D

Registration

N29YV

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 135: Air Taxi & Commuter

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Orlando

Aircraft damage

Minor

Weather

VMC

Light

Dawn

NTSB number

MIA96IA109

Nobody was injured.

Failure of a blade counterweight clamp retaining screw due to cadmium embrittlement which occurred during the manufacture process. This resulted in the counterweight clamp separating and striking the adjacent blade causing it to separate.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

Shortly after takeoff a counterweight and clamp separated from one propeller blade on the right propeller. The separated counterweight and clamp struck the adjacent blade and caused the blade to separate about 12 inches from the hub. The resultant imbalance caused severe vibration from the right engine. The propeller governor struck the engine cowling and broke into pieces. The flight crew shutdown the engine using the condition lever. The propeller did not feather when commanded by the flight crew, and it continued to windmill causing vibration and drag until landing. Metallurgical examination indicated a blade counterweight clamp screw failed causing the clamp to separate. The screw fracture surface initiated at the screw threads and had features typical of intergranular cracking. Cadmium, which is used as a plating on the screw after manufacturer, was present on the fracture surface.

Quoted verbatim from the NTSB record.