# SDR ASAA2026082468306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2026
- Submitted: August 27, 2026
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 69,985 hours, 21,262 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Valve
- Part number: 714042
- Part serial: 2753A
- Condition: Faulty
- Location: Zone 700
- Part time: 74,328 hours, 36,175 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026082468306

## Discrepancy

AFTER LANDING APPLIED BRAKES & FELT LIKE PLAYING WASNT SLOWING LIKE NORMAL. THEN FELT LIKE BRAKE WAS GRABBING THEN FELT IT AGAIN AND A THIRD TIME AGGRESSIVE GRABBING AT A SLOW SPEED. WE WERE ABLE TO TAXI WITHOUT FURTHER INCIDENT. NO AUTOBRAKE ON LANDING & NOTHING ABNORMAL ON DEPT. GROUNDED - YES. PERFORMED FIM TASK 32-42 TASK 816 THROUGH STEP D. NOTICED HYD B READING 106 BUT SIGHT GLASS WAS WITHIN PROPER RANGE.  PERFORMED HYD SYS BLEED IAW AMM 29-00-00. TAXIED ACFT. GRABBING CONDITION NO LONGER CONTINUED TO OCCURRED. PILOT REPORTED RT BRAKES WERE GRABBING. R & R NR 3 & 4 BRAKE ASSEMBLIES IAW AMM 32-41-41-401. PERFORMED SLOW SPEED TAXI. BRAKES INTERMITTENT, ABNORMAL FEEL, LIKE NO BRAKING THEN AGGRESSIVE BRAKE ACTUATION DURING TAXI. REF FIM 32-42-816 INSP BRAKE LINKAGE & CABLE ADJUST. NO DEFECTS. REPLACED RT BRAKE METERING VALVE REF AMM 32-41-31. OPS CK GOOD. NO LEAKS. BLED AIR FROM ALL 4 BRAKES IAW AMM 32-41-00B HYD RESERVOIR QTY CORRECTS AFTER ACT CONFIG PER AMM 12-12-00. MAINTENANCE TAXI PERFORMED WITH NO DEFECTS NOTED. OK FOR SERVICE.

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