# JASC 6330: Main Rotor Transmission Mount

- Type: JASC system/component code (FAA)
- ATA chapter: 63 Main Rotor Drive
- Title in the code table: MAIN ROTOR TRANSMISSION MOUNT
- Service difficulty reports: 603
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=58
- Page: https://openairdocs.org/jasc/6330

## What it covers

The suspension system for the transmission mounting in airframe. Typical parts are suspension bars, isolation mount, etc.

## Latest service difficulty reports

- [SDR QMLA2025011720003](https://openairdocs.org/sdr/QMLA2025011720003), Jan 14, 2025: MOUNT, DELAMINATED (N189AM)
- [SDR 2023FA0000275](https://openairdocs.org/sdr/2023FA0000275), May 25, 2023: RESTRAINT, UNSTAKED (N505FW)
- [SDR 2A6R2021122262705](https://openairdocs.org/sdr/2A6R2021122262705), Dec 22, 2021: UNKNOWN, UNKNOWN (N527BF)
- [SDR 8LFA20190104001](https://openairdocs.org/sdr/8LFA20190104001), Jan 4, 2019: FITTING, CRACKED (N776LF)
- [SDR 8LFA20180820001](https://openairdocs.org/sdr/8LFA20180820001), Aug 20, 2018: FITTING, CRACKED (N786LF)
- [SDR QMLA2018060518067](https://openairdocs.org/sdr/QMLA2018060518067), Jun 5, 2018: FITTING, CRACKED (N353LL)
- [SDR QMLA2018052918064](https://openairdocs.org/sdr/QMLA2018052918064), May 21, 2018: FITTING, CRACKED (N355LL)
- [SDR QMLA2018052988065](https://openairdocs.org/sdr/QMLA2018052988065), May 18, 2018: FITTING, CRACKED (N352LL)
- [SDR 8LFA2018051608001](https://openairdocs.org/sdr/8LFA2018051608001), May 8, 2018: FITTING, CRACKED (N616LF)
- [SDR 2018FA0000130](https://openairdocs.org/sdr/2018FA0000130), Apr 3, 2018: FITTING, CRACKED (N9379K)
- [SDR 2018FA0000129](https://openairdocs.org/sdr/2018FA0000129), Apr 3, 2018: SUPPORT FITTING, CRACKED (N9379K)
- [SDR 8LFA201803200001](https://openairdocs.org/sdr/8LFA201803200001), Mar 18, 2018: FITTING, CRACKED (N636LF)
- [SDR 8LFA201800320001](https://openairdocs.org/sdr/8LFA201800320001), Jan 26, 2018: FITTING, CRACKED (N526LF)
- [SDR 8LFA20171218001](https://openairdocs.org/sdr/8LFA20171218001), Dec 18, 2017: FITTING, CRACKED (N656LF)
- [SDR QMLA2017110117123](https://openairdocs.org/sdr/QMLA2017110117123), Nov 1, 2017: MOUNT, CRACKED (N354LL)
- [SDR 8LFA20171011001](https://openairdocs.org/sdr/8LFA20171011001), Oct 11, 2017: FITTING, CRACKED (N576LF)
- [SDR 8LFA20170907001](https://openairdocs.org/sdr/8LFA20170907001), Sep 7, 2017: FITTING, CRACKED (N556LF)
- [SDR 8LFA20170901001](https://openairdocs.org/sdr/8LFA20170901001), Sep 1, 2017: FITTING, CRACKED (N546LF)
- [SDR 8LFA20170815003](https://openairdocs.org/sdr/8LFA20170815003), Aug 11, 2017: FITTING, CRACKED (N626LF)
- [SDR 8LFA20170815002](https://openairdocs.org/sdr/8LFA20170815002), Aug 2, 2017: FITTING, CRACKED (N756LF)
- [SDR 8LFA08152017001](https://openairdocs.org/sdr/8LFA08152017001), Jul 21, 2017: FITTING, CRACKED (N606LF)
- [SDR 8LFA20170815001](https://openairdocs.org/sdr/8LFA20170815001), Jul 19, 2017: FITTING, CRACKED (N566LF)
- [SDR 8LFA20170712001](https://openairdocs.org/sdr/8LFA20170712001), Jul 12, 2017: FITTING, CRACKED (N726LF)
- [SDR 8LFA20170712003](https://openairdocs.org/sdr/8LFA20170712003), Jun 15, 2017: FITTING, CRACKED (N596LF)
- [SDR 8LFA20170712004](https://openairdocs.org/sdr/8LFA20170712004), Jun 13, 2017: FITTING, CRACKED (N646LF)
- [SDR 8LFA20170712002](https://openairdocs.org/sdr/8LFA20170712002), May 23, 2017: FITTING, CRACKED (N586LF)
- [SDR AC2R2016032901](https://openairdocs.org/sdr/AC2R2016032901), Mar 7, 2016: FITTING, GALLED (N639MC)
- [SDR CA160217004](https://openairdocs.org/sdr/CA160217004), Feb 15, 2016: SPRING, DEBONDED
- [SDR CA160217001](https://openairdocs.org/sdr/CA160217001), Feb 15, 2016: SPRING, DEBONDED
- [SDR CA160215012](https://openairdocs.org/sdr/CA160215012), Feb 13, 2016: SPRING, DEBONDED
- [SDR CA160215011](https://openairdocs.org/sdr/CA160215011), Feb 13, 2016: SPRING, DEBONDED
- [SDR CA160212001](https://openairdocs.org/sdr/CA160212001), Feb 8, 2016: RESTRAINT, UNKNOWN
- [SDR CA160128005](https://openairdocs.org/sdr/CA160128005), Jan 21, 2016: SPRING, FAILED
- [SDR CA160128004](https://openairdocs.org/sdr/CA160128004), Jan 21, 2016: SPRING, DEBONDED
- [SDR CA160125017](https://openairdocs.org/sdr/CA160125017), Jan 21, 2016: SPRING, DEBONDED
- [SDR CA160115008](https://openairdocs.org/sdr/CA160115008), Jan 15, 2016: SLEEVE, BROKEN
- [SDR CHIR201511172182](https://openairdocs.org/sdr/CHIR201511172182), Nov 11, 2015: BOLT, BROKEN (N242CH)
- [SDR CA140128005](https://openairdocs.org/sdr/CA140128005), Jan 24, 2014: MOUNT, LEAKING
- [SDR CA131024005](https://openairdocs.org/sdr/CA131024005), Oct 22, 2013: MOUNT, FAILED
- [SDR CA130925002](https://openairdocs.org/sdr/CA130925002), Sep 24, 2013: NUT, CRACKED
- [SDR QMLA2013061113078](https://openairdocs.org/sdr/QMLA2013061113078), Jun 11, 2013: MOUNT, FAILED (N65UP)
- [SDR CA130612003](https://openairdocs.org/sdr/CA130612003), May 31, 2013: MOUNT, DAMAGED
- [SDR QMLA2012062912108](https://openairdocs.org/sdr/QMLA2012062912108), Jun 29, 2012: STOP, CRACKED (N230AM)
- [SDR QMLA2012050112072](https://openairdocs.org/sdr/QMLA2012050112072), May 1, 2012: BAR, DAMAGED (N115LN)
- [SDR ALGA2012032601](https://openairdocs.org/sdr/ALGA2012032601), Mar 26, 2012: MOUNT, CORRODED (N577AL)
- [SDR ALGA20122281201](https://openairdocs.org/sdr/ALGA20122281201), Feb 28, 2012: SUPPORT CASE, CORRODED (N9YBOB)
- [SDR CA120208002](https://openairdocs.org/sdr/CA120208002), Feb 6, 2012: MOUNT, FAILED
- [SDR ALGA070711687AL](https://openairdocs.org/sdr/ALGA070711687AL), Jul 7, 2011: MOUNT, CORRODED (N687AL)
- [SDR ALGA070611687AL](https://openairdocs.org/sdr/ALGA070611687AL), Jul 6, 2011: MOUNT, CORRODED (N687AL)
- [SDR P4YA2010071500001](https://openairdocs.org/sdr/P4YA2010071500001), Jul 15, 2010: MOUNT, CRACKED (N103WF)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.