Cessna 208B N1114N

Summary

On 19 March 2003 at about 03:25 local time, a Cessna 208B registered N1114N, operated by Mid Atlantic Freight, Inc., was involved in an incident near Saginaw, Michigan, United States. One person was on board and one had minor injuries. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

19 March 2003 at 03:25

Classification

Incident

Location

Saginaw, Michigan, United States

Nearest airport

MBS International (MBS)

Coordinates

43.5328, -84.0797

Aircraft

Cessna 208B

Registration

N1114N

Category

Airplane

Engines

1

Operator

Mid Atlantic Freight, Inc.

Operating rule

Part 135: Air Taxi & Commuter

Phase of flight

Not recorded

Route

Traverse City → Saginaw

Aircraft damage

Minor

Weather

VMC

Light

Night/Dark

NTSB number

CHI03IA096

1 person had minor injuries.

Failure of the engine bleed air pressure regulator. A contributing factor was the anti-chaffing tape on the air supply line.

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

Read the full NTSB narrative

The pilot executed an emergency landing after reporting smoke in the cockpit. The aircraft sustained minor damage during the incident. The pilot was treated at a local hospital and released. Shortly before landing the pilot reported noticing smoke in the cockpit. He reported he opened a vent, which cleared the smoke, and subsequently landed without incident. After landing, however, the vent did not adequately clear the smoke. He taxied to the ramp and emergency personnel assisted him from the aircraft. Rescue personnel reportedly examined the aircraft for the source of the smoke. Although they noted an occasional odor, it was not strong enough to indicate a definite origin. There was no evidence of a fire. A post-incident review determined the engine bleed air pressure regulator had failed, allowing unregulated bleed air into the deice system. The temperature of the unregulated P3 air may be as high as 607 degrees Fahrenheit. The bleed air is routed through a supply line which runs through the left side door post. The line is constructed of thin-walled aluminum tubing and is wrapped in anti-chaffing tape. The source of the smoke was the tape which became overheated due to the unregulated bleed air. The pressure regulator and pneumatic supply line were replaced. The aircraft was subsequently returned to service and, after monitoring several flights, the problem did not recur.

Quoted verbatim from the NTSB record.