Failure Modes and Effects Analysis

FMEA

Dropbox Assignment

Instructions: Draw an FMEA chart with the following information:

(Written by an

experienced Air Force Mechanic

–

with

a few alterations to simplify)

Component #1:

The

Power Rudder can fail in 2 ways:

(1)

The actuator can fail due to a

hydraulic leak

at the actuator

and

(2)

t

he power control unit can fail. The hydraulic leak

at the actuator

can

result in

the loss of the right hydraulic system.

This would be

evidenced by the hydraulic low pressure li

ght

illuminating. The hydraulic system has a

redundant system by using the crossover valv

e

.

The loss of the power control unit can

cause the flight controls on the tail of the aircraft to fail.

This would be evidenced by the

pilot losing the artificial feel to the flight controls. There is no re

dundant system for the

power control unit.

The

power rudder failure

may occur

within a 12 month period.

This

could result in death, permanent total disability,

and

loss

es

of approximately

$

250,000

.

Component #

2

:

Aircr

aft brakes could fail in 3 ways:

(1)

There could be

An

H

ydra

ulic

L

eak at the pressure line

.

(2) The

Brake anti

-

skid valve

could fail

.

(3) The

Brake rotors

could wear

out of limits. The hydraulic leak could cause the left hydraulic system to fail.

Left hydraulic system failure would be evidenced by the hy

draulic low pressure light

illuminated. The brake anti

-

skid valve

could cause increased brak

ing time. This failure

would be evidenced by the brake

light blinking

. The brake rotors worn

out of limits

could cause increased braking time. Warning for the brake rotors worn out of limits

would be evidenced by the brake pedals feeling spongy. The hydraulic system is the

only one with a backup. The crossover v

alve can be used to operate the components

on the other hydraulic system.

The brake failure is

likely

to be experienced within a 12

month period and could result in death, permanent total disability,

and

loss

es

exceeding

$1 million.

FMEA Dropbox Assignment

Instructions: Draw an FMEA chart with the following information: (Written by an

experienced Air Force Mechanic – with a few alterations to simplify)

Component #1: The Power Rudder can fail in 2 ways: (1) The actuator can fail due to a

hydraulic leak at the actuator and (2) the power control unit can fail. The hydraulic leak

at the actuator can result in the loss of the right hydraulic system. This would be

evidenced by the hydraulic low pressure light illuminating. The hydraulic system has a

redundant system by using the crossover valve. The loss of the power control unit can

cause the flight controls on the tail of the aircraft to fail. This would be evidenced by the

pilot losing the artificial feel to the flight controls. There is no redundant system for the

power control unit. The power rudder failure may occur within a 12 month period. This

could result in death, permanent total disability, and losses of approximately $250,000.

Component #2: Aircraft brakes could fail in 3 ways: (1) There could be An Hydraulic

Leak at the pressure line. (2) The Brake anti-skid valve could fail. (3) The Brake rotors

could wear out of limits. The hydraulic leak could cause the left hydraulic system to fail.

Left hydraulic system failure would be evidenced by the hydraulic low pressure light

illuminated. The brake anti-skid valve could cause increased braking time. This failure

would be evidenced by the brake light blinking. The brake rotors worn out of limits

could cause increased braking time. Warning for the brake rotors worn out of limits

would be evidenced by the brake pedals feeling spongy. The hydraulic system is the

only one with a backup. The crossover valve can be used to operate the components

on the other hydraulic system. The brake failure is likely to be experienced within a 12

month period and could result in death, permanent total disability, and losses exceeding

$1 million.