Failure Modes and Effects Analysis
rude-1
resources.zipResources/Completed FMEA Example from video.xlsx
Sheet1
| Name ____________________________________________________________________________________ | ||||||||
| FMEA EXERCISE ON AIRCRAFT BREAKING SYSTEM | ||||||||
| Component | Failure or Error | Effects on | Severity | Probab | RAC | Detection | ||
| Mode | Other components | Methods | Redunduncies | |||||
| Break pad | The glue can separate on the pad | The glue failure can corrode the metal | II | E | Yellow - management decision | Warning light | None | |
| the tread can wear thin | Affect the ergonomic space | Pilot may notice | None | |||||
| Hydraulics | Leak in cylinder | Breaking harder | I | B | Red Address Immediately | Warning light | Siren | |
| Wing nut fails | Brakes slip | None | None | |||||
| Oil can separate | Brakes less effective | None | None | |||||
| Instructions: Fill out the FMEA document using the information below: I have given you basic information. | ||||||||
| Fill in the other boxes with what you perceive to be the possible answers. You will need to use your Risk matrices. | ||||||||
| Write a memo to your boss detailing your recommendations. | ||||||||
| Component #1: Brake pads can fail in 2 ways. The glue can separate on the pad and the tread can wear thin. The glue failure can corrode the metal beneath the pads. | ||||||||
| The tread wear can effect the ergonomic space between the foot and the top of the brake box. The brake pad failure may occur once in 5 years. | ||||||||
| This could result in losses exceeding $200,000. Warning light comes on if metal pads become damaged. Pilot may notice if dimensions of box change. | ||||||||
| No redunduncies are in place. | ||||||||
| Component #2: Hydraulics can fail in 3 ways. There can be a leak in the cylinder; the wing nuts can fail; the oil can separate. The leak could cause the braking to be harder | ||||||||
| than normal. The wing nuts could cause the brake to slip. The oil separation could cause the brakes to be less effective. Hydraulics failure may occur at least | ||||||||
| once per year. This could result in losses exceeding $1 million. Warning light and siren sound if there is cylinder leak. No detection method exists | ||||||||
| for the wing nut failure. There is no detection method for oil separation. | ||||||||
| Component #3: ????? | ||||||||
| Memo: | ||||||||
| PROBABILITY | ||||||||
| Probability | Probability | Description | ||||||
| Name | Level | |||||||
| Frequent | A | Likely to be experienced at least 5 times by a system within a 12 month period | ||||||
| Probable | B | Likely to be experienced at least once by a system within a 12 month period | ||||||
| Occasional | C | May be experienced by a system within a 12 month period | ||||||
| Remote | D | Unlikely, but possible to be experienced by a system within a 12 month period | ||||||
| Improbable | E | Might be experienced once in 5 years by a system | ||||||
| Eliminated | F | Not possible | ||||||
| SEVERITY | ||||||||
| Description | Category | Environmental, Safety, and Health Result Criteria | ||||||
| Catastrophic | I | Could result in death, permanent total disability, loss exceeding $1 million | ||||||
| Critical | II | Could result in permanent total disability, loss exceeding $200,000 | ||||||
| Marginal | III | Could result in injury or loss from $200,000 to $10,000 | ||||||
| Negligible | IV | Could result in minor injury or loss less than $10,000 | ||||||
| Severity | ||||||||
| Negligible IV | Marginal III | Critical II | Catastrophic I | Red=address immediately | ||||
| P | Frequent A | Orange=address as soon as feasible | ||||||
| r | Probable B | (red) | Yellow=administrative decision | |||||
| o | Occasional C | (orange) | Green=address if need be or do not address | |||||
| b | Remote D | (yellow) | ||||||
| Improbable E | ||||||||
| Eliminated | (blue) | |||||||
Sheet2
Sheet3
Resources/FMEA Example from Video II.docx
Component #1: Brake pads can fail in 2 ways. The glue can separate on the pad and the tread can wear thin. The glue failure can corrode the metal beneath the pads. The tread wear can affect the ergonomic space between the foot and the top of the brake box. The brake pad failure may occur once in 5 years. This could result in losses exceeding $200,000. Warning light comes on if metal pads become damaged. Pilot may notice if dimensions of box change. No redundancies are in place.
Resources/FMEA Example from Video.pdf
Component #1: Brake pads can fail in 2 ways. The glue can separate on the pad and the tread can wear thin. The glue failure can corrode the metal beneath the pads. The tread wear can affect the ergonomic space between the foot and the top of the brake box. The brake pad failure may occur once in 5 years. This could result in losses exceeding $200,000. Warning light comes on if metal pads become damaged. Pilot may notice if dimensions of box change. No redundancies are in place.
Component #2: Hydraulics can fail in 3 ways. There can be a leak in the cylinder; the wing nuts can fail; the oil can separate. The leak could cause the braking to be harder than normal. The wing nuts could cause the brake to slip. The oil separation could cause the brakes to be less effective. Hydraulics failure may occur at least once per year. This could result in losses exceeding $1 million. Warning light and siren sound if there is cylinder leak. No detection method exists for the wing nut failure. There is no detection method for oil separation.
Resources/FMEA1.html.zip
FMEA1.html
