Aircraft brakes work hard at stopping a landing aircraft. Over time, they wear. The rate of wear is dependent on several factors such as length of runway, aircraft speed, and current temperature. We all know the brakes are going to need replacement at some point, however determining when can sometimes be a guessing game.
Brake wear is gauged in different ways depending on the make and model of the aircraft and brake OEM. A common method used is a wear indicator pin. The length of the pin determines the amount of wear remaining. This leads to a common question of how much wear do you have left based on the pin measurement you just took?
This can be easily calculated if you knew the dimension or length of the wear indicator pin when the brake was new. The list below contains common business aircraft and their associated brakes, with the relevant pin measurement with new wear components.
The method for taking the measurement differs from aircraft to aircraft and brake manufacturer. Be sure to consult the relevant technical data when taking this measurement.
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|
Aircraft |
Brake PN |
New Pin |
|
Cessna 525 |
2-1559-1 |
0.20" |
|
Cessna 525 |
2-1559-2 or -3 |
0.41" |
|
Cessna 525A |
2-1651-1 |
0.86" |
|
Cessna 525B |
2-1695 |
0.86" |
|
Cessna 550 |
2-1528-4 |
0.61" |
|
Cessna 550 |
2-1528-5 |
0.50" |
|
Cessna 550 |
2-1528-6 |
0.59" |
|
Cessna 550 Bravo |
2-1588-X |
0.67" |
|
Cessna 560 |
2-1529-5 |
0.69" |
|
Cessna 560 |
2-1529-6 |
0.43" |
|
Cessna 560 |
2-1529-7 |
0.57" |
|
Cessna 560 |
2-1656 |
0.97" |
|
Cessna 560 XL |
2-1601-X |
0.90" |
|
Cessna 650 |
2-1502 |
0.35" |
|
Cessna 650 |
2-1502-1 |
0.16" |
|
Cessna 650 |
2-1502-2 |
0.31" |
|
Cessna 650 |
2-1502-3 |
0.26" |
|
Cessna 680 |
2-1675-X |
0.43" |
|
Cessna 750 |
2-1567-X |
0.58" |
|
Cessna S550 |
2-1588-X |
0.67" |
|
Challenger 300 |
2-1662-2 |
1.56" |
|
Challenger 600/601 |
5006191-X |
0.70" |
|
Challenger 600/601 |
5009027-X |
0.70" |
|
Challenger 604 |
5012333 |
0.83" |
|
Falcon 2000 |
C20382000-X |
0.45" |
|
Falcon 2000 |
C20382100 |
0.76" |
|
Falcon 2000 EX |
C20544000 |
0.60" |
|
Falcon 2000 S |
C20544000 |
0.60" |
|
Falcon 7X |
90002744-1 and -2 |
1.06" |
|
Falcon 7X |
90002744-4 |
0.53" |
|
Falcon 900 |
C20181100-X |
0.55" |
|
Falcon 900 DX |
5014198 |
0.70" |
|
Falcon 900 EX |
C20181100-8 |
0.55" |
|
Falcon 900 EX EASY |
5014198 |
0.70" |
|
Global 5000 |
2-1608-2 |
1.47" |
|
Global Express |
2-1608-2 |
1.47" |
|
Gulfstream G400 |
AHA2070 |
0.97" |
|
Gulfstream G450 |
90001937-X |
1.01" |
|
Gulfstream G550 |
AHA2163 |
0.86" |
|
Gulfstream GIII |
5004902-X |
0.90" |
|
Gulfstream GIII |
5010933-X |
0.90" |
|
Gulfstream GIII |
90000420-X |
0.90" |
|
Gulfstream GIV |
5004902-X |
0.90" |
|
Gulfstream GIV |
5010933-X |
0.90" |
|
Gulfstream GV |
AHA2163 |
0.86" |
|
Gulfstream GV |
AHA2396-1 |
0.86" |
|
Hawker 800 |
AHA1897 |
0.50" |
|
Hawker 800 XP |
AHA1897 |
0.50" |
|
Hawker 850 XP |
AHA1897 |
0.50" |
|
Hawker 900 XP |
AHA1897 |
0.50" |
|
Learjet 45 and 70 |
2-1579-2 |
0.58" |
|
Legacy 650 |
2-1582 |
0.90" |
|
Phenom 100 |
90005025-X |
0.50" |
|
Phenom 300 |
DAP00097-X |
0.60" |
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