Swearingen SA226TC N124AV

Summary

On 20 December 1986 at about 04:10 local time, a Swearingen SA226TC registered N124AV, operated by Big Sky Airlines, was involved in an incident near Billings, Montana, United States. 13 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.

Date

20 December 1986 at 04:10

Classification

Incident

Location

Billings, Montana, United States

Nearest airport

Billings Logan Int'l. (BIL)

Coordinates

45.8693, -108.4706

Aircraft

Swearingen SA226TC

Registration

N124AV

Category

Airplane

Engines

2

Operator

Big Sky Airlines

Operating rule

Part 135: Air Taxi & Commuter

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Helena → Billings

Aircraft damage

Minor

Weather

VMC

Light

Night/Dark

NTSB number

DEN87IA032

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

N124AV WAS OPERATING AS BIG SKY AIRLINES FLT 3857, SCHEDULED SERVICE FROM HELENA TO BILLINGS. THE FLT PROCEEDED UNEVENTFULLY UNTIL THE APCH INTO BILLINGS. THE FLT CREW STATED AFTER THE INCIDENT THAT WHEN THE LANDING GEAR WAS EXTENDED, THE LEFT MAIN GEAR LIGHTS DID NOT ILLUMINATE, VERIFYING THE 'DOWN AND LOCKED POSITION..' AFTER NUMEROUS ATTEMPTS TO ILLUMINATE THE LIGHTS AND CONFIRM THE POSITION OF THE LANDING GEAR, THE CREW EXECUTED AN INTENTIONAL GEAR UP LANDING. POST INCIDENT INSPECTION OF THE LANDING GEAR SYSTEM REVEALED IT WAS CAPABLE OF NORMAL OPERATION. THE MALFUNCTIONING COCKPIT INDICATOR LIGHT WAS TRACED BACK TO AN INOPERATIVE OUTBOARD DOWNLOCK MICROSWITCH.

Quoted verbatim from the NTSB record.