# SDR CA111110003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2011
- Submitted: January 23, 2013
- Operation: Air carrier
- Make and model: Grob G 120A
- Registry model: [Grob G 120A](https://openairdocs.org/model/grob-werke-g-120a) (OpenAirDocs)
- Engine: Lyc AEIO540D4D5
- System (JASC): [3242 · Brake](https://openairdocs.org/jasc/3242)
- Part: Brake Pads
- Part number: 06610600
- Condition: Worn
- Location: Mlg
- Part time: 243 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA111110003

## Discrepancy

(CAN) BRAKE PAD WEAR IS UNEVEN. THE TOP OF THE PADS IS WEARING AT TWICE THE RATE OF THE LOWER PART OF THE PADS. THE PROBLEM APPEARS TO BE THAT THERE IS NOT ENOUGH ROOM FOR THE PAD PRESSURE PLATE TO SLIDE ALONG THE BRAKE CALIPER ANCHOR BOLTS WHEN THE BRAKE CALIPER ASSY IS ASSEMBLED ON THE ACFT.  THE PAD PRESSURE PLATE ENDS UP BEING PINCHED AGAINST THE BRAKE MOUNTING PLATE AND BEGINS TO FLEX INSTEAD OF STAYING SQUARE TO THE ROTOR DISC.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.