Fairchild SA227-AC N41NE

Summary

On 18 January 2008 at about 16:45 local time, a Fairchild SA227-AC registered N41NE was involved in an incident near Dutch Harbor, Alaska, United States. 2 people were on board and nobody was injured. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

18 January 2008 at 16:45

Classification

Incident

Location

Dutch Harbor, Alaska, United States

Nearest airport

Dutch Harbor (L2G)

Coordinates

53.9069, -166.5492

Aircraft

Fairchild SA227-AC

Registration

N41NE

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 121: Air Carrier

Phase of flight

Not recorded

Route

Dutch Harbor → Anchorage

Aircraft damage

Not recorded

Weather

VMC

Light

Day

NTSB number

ANC08IA033

Nobody was injured.

The disengagement of the rudder control cable and loose rudder cable retaining pins. A factor contributing to the accident was a wind gust.

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

Read the full NTSB narrative

The pilot of the nonscheduled cargo flight reported that during taxi for takeoff the airplane encountered a 68-knot wind gust, and he returned to the gate to examine the rudder. Finding no damage, he continued the flight. After takeoff, the pilot said there was very little left rudder control. An examination of the rudder was made after the airplane landed at its destination. From the pilot's rudder pedals, the rudder is controlled by a cable which makes a 180-degree turn toward the tail via two phenolic pulleys. Each pulley has two guard pins, which keep the cable from jumping off the pulleys if the cable becomes slack. The inspection showed that the cable had jumped off the upper pulley. The pulley's upper guard pin had retracted, and did not prevent the cable from jumping off the pulley. The guard pin has a perforated and deformed end, giving it a spring action which secures the pin after passing through the holes on either side of the pulley bracket. No service difficulty reports were found for the pins, and the pins do not have any service life limits. An examination of the operator's other, similar model airplanes, showed that several of their guard pins had also retracted. Evidence suggests that the pin's locking action becomes weakened and ineffective by repeated use. The operator submitted a service difficulty report, and as a result of this incident, the manufacturer has published service letters 226-SL-037, 227-SL052, and CC7-SL-045. The service letters indicate that the pins should be inspected, and that all pins should be replaced with improved pins, and secured with cotter pins.

Quoted verbatim from the NTSB record.