# JASC 6510: Tail Rotor Drive Shaft

- Type: JASC system/component code (FAA)
- ATA chapter: 65 Tail Rotor Drive
- Title in the code table: TAIL ROTOR DRIVE SHAFT
- Service difficulty reports: 1,259
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=58
- Page: https://openairdocs.org/jasc/6510

## What it covers

The shafts, flexible couplings and bearings, etc., from the main rotor transmission to the tail rotor assembly. Typical parts shaft, coupling, bearing, hanger, etc.

## Service difficulty reports (1,259, newest 50)

- [SDR 2025F00130](https://openairdocs.org/sdr/2025F00130), May 19, 2025: Bell 206B3. DRIVE SHAFT. CRACKED. DURING 12 MONTH INSPECTION FOUND CRACKS RADIATING FROM WHERE THE RIVETS ARE INSTALLED ON EITHER END ON ONE OF THE SEGMEN (N868JB)
- [SDR QMLA2024102820141](https://openairdocs.org/sdr/QMLA2024102820141), Oct 24, 2024: Bolkms BK117C2. CLAMP. BROKEN. CLAMP HOLDING RUBBER BOOT AROUND TR DRIVESHAFT BROKE AND CAME LOOSE. IT LANDED AT THE LEFT SIDE OF THE FUSELAGE . (N635TJ)
- [SDR QR9R2024061300001](https://openairdocs.org/sdr/QR9R2024061300001), Jun 13, 2024: Bolkms BK117C2. SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR NKVA202501500003](https://openairdocs.org/sdr/NKVA202501500003), Mar 24, 2024: Snias AS350B3. BEARING. SHIFTED. THE NO. 1 TR DRIVESHAFT BEARING SLEEVE BECAME DISPLACED FROM THE NO. 1 TR DRIVESHAFT BEARING ASSEMBLY. THIS CAUSED A GAP (N353JR)
- [SDR NKVA2024032510001](https://openairdocs.org/sdr/NKVA2024032510001), Mar 24, 2024: Snias AS350B3. BEARING. MIGRATED. THE NO. 1 TR DRIVESHAFT BEARING SLEEVE BECAME DISPLACED FROM THE NO.1 TR DRIVESHAFT BEARING ASSEMBLY. THIS CAUSED A GAP  (N353JR)
- [SDR QMLA2024032220033](https://openairdocs.org/sdr/QMLA2024032220033), Mar 21, 2024: Snias AS350B3. SLEEVE. FAILED. DURING A VISUAL INSPECTION OF THE TAIL ROTOR DRIVE BEARINGS IT WAS DISCOVERED THAT THE INNER SLEEVE OF THE #3 BEARING HA (N533AM)
- [SDR QR9R2024031300001](https://openairdocs.org/sdr/QR9R2024031300001), Mar 13, 2024: Bolkms BK117C2. SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2024022600002](https://openairdocs.org/sdr/QR9R2024022600002), Feb 26, 2024: Bolkms BK117C2. SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2024022600001](https://openairdocs.org/sdr/QR9R2024022600001), Feb 26, 2024: Bolkms BK117C2. SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2024011100002](https://openairdocs.org/sdr/QR9R2024011100002), Jan 11, 2024: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2024011100001](https://openairdocs.org/sdr/QR9R2024011100001), Jan 11, 2024: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000006](https://openairdocs.org/sdr/QR9R2023113000006), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000005](https://openairdocs.org/sdr/QR9R2023113000005), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000004](https://openairdocs.org/sdr/QR9R2023113000004), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000003](https://openairdocs.org/sdr/QR9R2023113000003), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000002](https://openairdocs.org/sdr/QR9R2023113000002), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R2023113000001](https://openairdocs.org/sdr/QR9R2023113000001), Nov 30, 2023: Bolkms BK117C2. DRIVE SHAFT. FAILED INSP. M1 HAS DISCOVERED A DESIGN/ENGINEERING FLAW BETWEEN THE AMM 65-11-00, 4-9 FIGURE 1/1 SHEET 3/3 AND THE CURRENT MANUFACTU
- [SDR QR9R20210611002](https://openairdocs.org/sdr/QR9R20210611002), Jun 11, 2021: Bolkms BK117C2. BUSHING. OUT OF LIMITS. SUBMITTED TO REVEAL THE SYSTEMIC AND PREMATURE FAILURE RATE OF THE TAIL ROTOR SHAFT BUSHINGS DUE TO EXCESSIVE PLAY AND W
- [SDR EVCA202010211](https://openairdocs.org/sdr/EVCA202010211), Oct 20, 2020: Bell 407. DRIVE SHAFT. CORRODED. DURING ROUTINE MAINTENANCE, CORROSION WAS DISCOVERED ON THE AFT TAIL ROTOR DRIVE SHAFT. (N512MT)
- [SDR EVCA2020093003](https://openairdocs.org/sdr/EVCA2020093003), Sep 29, 2020: Bell 206L3. DISC PACK. CORRODED. DURING ROUTINE INSPECTION, NR 6 TAIL ROTOR DRIVE SHAFT DISC PACK HAS CORROSION BETWEEN DISCS. (N277AE)
- [SDR IAVA202008040001](https://openairdocs.org/sdr/IAVA202008040001), Jul 31, 2020: Bell 407. DRIVE SHAFT. CRACKED. DURING 100 HOUR LUBRICATION OF TAIL ROTOR DRIVE SHAFT SPLINES THE #3 TAIL ROTOR DRIVE SHAFT WAS FOUND CRACKED AT ONE ATT (N34BM)
- [SDR EVGR202006240001](https://openairdocs.org/sdr/EVGR202006240001), Jun 15, 2020: Robsin R44RAVENII. BEARING. LEAKING. P/N C647-8 TAIL ROTOR DRIVE SHAFT DAMPER BEARING WAS FOUND TO BE LEAKING GREASE AT A SCHEDULED INSPECTION. PART TOTAL TI (N44KV)
- [SDR YV3R2020030600246](https://openairdocs.org/sdr/YV3R2020030600246), Feb 19, 2020: Robsin R44. BEARING. DEFECTIVE. CUSTOMER REPORTED BEARING ASSEMBLY P/N: C647-8 SEAL IS SPINNING IN HOUSING.
- [SDR YV3R2020030700245](https://openairdocs.org/sdr/YV3R2020030700245), Feb 19, 2020: Robsin R44. BEARING. DEFECTIVE. CUSTOMER REPORTED BEARING ASSEMBLY P/N: C647-8 SEAL IS SPINNING IN HOUSING.
- [SDR AC2R2019120401](https://openairdocs.org/sdr/AC2R2019120401), Dec 4, 2019: Agusta AW139. BEARING. CRACKED. THE BEARING P/N: 3T6510V00255 S/N: 16144 WAS INSTALLED NEW INTO BEARING SUPPORT P/N: 3T6510A00443 S/N: THB9999 AT 3565.2 (N139CN)
- [SDR 2019FA0000298](https://openairdocs.org/sdr/2019FA0000298), Sep 6, 2019: Hughes 369D. COUPLING. BROKEN. FAILURE OF THE AFT COUPLING. FRACTURE OF COUPLING. SEE ENGINEERED PRODUCTS 8130-3 WORK ORDER # MDI1167 DATED MARCH 20, 2 (N54528)
- [SDR YV3R2019062720134](https://openairdocs.org/sdr/YV3R2019062720134), Jun 24, 2019: Robsin R44. BEARING. DEFECTIVE. CUSTOMER REPORTED BEARING ASSEMBLY DUST SHIELD SPINS IN BEARING HOUSING P/N: C172-1.
- [SDR YV3R2019062700133](https://openairdocs.org/sdr/YV3R2019062700133), Jun 24, 2019: Robsin R66. BEARING. DEFECTIVE. CUSTOMER REPORTED BEARING ASSEMBLY DUST SHIELD SPINS IN BEARING HOUSING.
- [SDR YV3R2019060422103](https://openairdocs.org/sdr/YV3R2019060422103), May 24, 2019: Robsin R44. BEARING. MALFUNCTIONED. CUSTOMER REPORTED BEARING P/N: C647-8 DUST SEAL SPINS WITH SHAFT.
- [SDR CA190509010](https://openairdocs.org/sdr/CA190509010), May 8, 2019: Urocop EC120B. BEARING. ROUGH. (CAN) EXCESSIVE HEAT WAS NOTED DURING THE POST MAINTENANCE CHECK FOR HEATING IN THE FORWARD TAIL ROTOR SHAFT BEARING. DU
- [SDR CA190308019](https://openairdocs.org/sdr/CA190308019), Mar 8, 2019: Bell 212. COUPLING. DAMAGED. (CAN) NEW TAIL ROTOR COUPLING FROM MANUFACTURER PART NUMBER 204040604005S HAS SCORING MARKS IN VALLEY BETWEEN TEETH. MAC
- [SDR CA190307015](https://openairdocs.org/sdr/CA190307015), Mar 4, 2019: Skrsky S92A. HANGER ASSY. DAMAGED. (CAN) DURING THE REVIEW OF THE HUMS DATA DIRECTLY FOLLOWING THE AIRCRAFT`S RETURN FROM AN OFFSHORE FLIGHT, A HANGER BEAR
- [SDR CA190219023](https://openairdocs.org/sdr/CA190219023), Feb 15, 2019: Bell 212. COUPLING. GOUGED. (CAN) TRD OUTER COUPLING FOUND WITH POSSIBLE MACHINING MARKING/GOUGES.
- [SDR YH7R20190201001](https://openairdocs.org/sdr/YH7R20190201001), Feb 1, 2019: Bell 206B3. DRIVE SHAFT. CRACKED. IN PERFORMING BEL HELICOPTER 100HR PERIODIC INSPECTION A CRACK WAS IDENTIFIED ON THE FORWARD SEGMENT OF THE TAIL ROTOR D (N233HC)
- [SDR QMLA2018112518125](https://openairdocs.org/sdr/QMLA2018112518125), Nov 25, 2018: Bolkms BK117A4. RIVET. LOOSE. PILOT CONTACTED ME AFTER PERFORMING HIS DAILY PREFLIGHT AIRWORTHINESS CHECK. HE STATED THE TAIL ROTOR WAS MAKING A POPPI (N485UH)
- [SDR 9EKA20180126001](https://openairdocs.org/sdr/9EKA20180126001), Jan 26, 2018: Snias SA330J. DRIVE SHAFT. SHEARED. AFTER THE FLIGHT HAD BEEN COMPLETED AND THE AIRCRAFT WAS BACK ON THE SHIP AND CHOCKED AND CHAINED THE CREW PROCEEDED TO  (N339EV)
- [SDR CA180117008](https://openairdocs.org/sdr/CA180117008), Jan 8, 2018: Bell 206B. DRIVE SHAFT. WORN. (CAN) NOTED A KNOCKING NOISE NEAR TAIL ROTOR GEARBOX AFTER AIRCRAFT LANDED FOR MAINTENANCE. FOUND EXCESSIVE PLAY BETWEEN
- [SDR QMLA2017101417111](https://openairdocs.org/sdr/QMLA2017101417111), Oct 14, 2017: Urocop EC130B4. MOUNT. CRACKED. CRACK FOUND ON THE NR 1 TAIL ROTOR DRIVE SHAFT BEARING MOUNT BRACKET, FOUND DURING A SHCEDULED MAINTENANCE BEARING CHANG (N425AM)
- [SDR EVCA201703101](https://openairdocs.org/sdr/EVCA201703101), Mar 10, 2017: Bell 407. FLEX COUPLING. CRACKED. WHILE PERFORMING PREFLIGHT CHECK, PILOT NOTED THAT THE AFT MOST FLEXIBLE DISC PACK COUPLING ON THE TAIL ROTOR SEGMENTED  (N512MT)
- [SDR ALGA2016110700001](https://openairdocs.org/sdr/ALGA2016110700001), Nov 1, 2016: Agusta AW139. MOUNT. CRACKED. CRACK FOUND IN AREA OF NR 1 TAIL ROTOR DRIVESHAFT HANGAR BEARING MOUNT ON L/H SIDE OF TAILBOOM.AWAITING FOR REPAIR FROM  (N9YTKB)
- [SDR CA160215022](https://openairdocs.org/sdr/CA160215022), Feb 15, 2016: Bell 206B. COUPLING. BROKEN. (CAN) DURING A SCHEDULED 100/300 HR INSPECTION, THE OUTER DISC OF A 10 DISC PACK WAS DISCOVERED BROKEN THE EDGE RUB INDI
- [SDR EVCA201601121](https://openairdocs.org/sdr/EVCA201601121), Nov 30, 2015: Bell 407. COUPLING. LOOSE. PILOT STATED THAT UPON TAKEOFF THERE WAS A TAIL ROTOR VIBRATION. THEY LANDED THE ACFT & CALLED THE ACFT OOS. WE DISPATCH (N512MT)
- [SDR EVCA201601124](https://openairdocs.org/sdr/EVCA201601124), Nov 23, 2015: Bell 407. ADAPTER. LOOSE. NUMBER 3 TAIL ROTOR DRIVESHAFT FOUND TO HAVE ADAPTER NUT BELOW MINIMUM TORQUE. (N488AE)
- [SDR EVCA201601200023](https://openairdocs.org/sdr/EVCA201601200023), Nov 23, 2015: Bell 407. DRIVE SHAFT. WORN. NUMBER 2 TAIL ROTOR DRIVE SHAFT FOUND TO HAVE PITTING & A WEAR STEP ON COUPLING SPLINES. (N488AE)
- [SDR EVCA201601122](https://openairdocs.org/sdr/EVCA201601122), Nov 18, 2015: Bell 407. COUPLING. EXCESS PLAY. UPON DETAILED INSPECTION FOUND NR 2 TAIL ROTOR DRIVESHAFT COUPLING TO HAVE ABNORMAL PLAY. (N512MT)
- [SDR CA160119006](https://openairdocs.org/sdr/CA160119006), Nov 2, 2015: Bell 407. DRIVE SHAFT. SHEARED. (CAN) AIRCRAFT WAS ABOUT TO DEPART WHEN THE TAIL ROTOR DRIVE SHAFT SHEARED ABOVE THE HORIZONTAL STABILIZER. NO INJURIES 
- [SDR EVCA20151109001](https://openairdocs.org/sdr/EVCA20151109001), Nov 2, 2015: Bell 407. DRIVE SHAFT. SHEARED. UPON TAKING OFF THE ACFT EXPERIENCED AN UNCOMMANDED YAW. THE PILOT IMMEDIATELY LANDED & SHUTDOWN THE ACFT. UPON MX INSPE (N496AE)
- [SDR CA150601004](https://openairdocs.org/sdr/CA150601004), May 22, 2015: Snias AS350B3. BUSHING. DAMAGED. (CAN) SYMETRICAL MECHANICAL CUTS ON FLANGE OF NEW RUBBER BUSHING THAT HOUSES THE T/R DRIVE SHAFT BEARING. ONLY SEEN WHEN
- [SDR CA150601003](https://openairdocs.org/sdr/CA150601003), May 22, 2015: Snias AS350B3. BUSHING. DAMAGED. (CAN) NEW RUBBER BUSHING THAT HOUSES THE TAILROTOR DRIVESHAFT BEARING HAS A SERIES OF MECHANICAL CUTS AROUND FLANGE. THE
- [SDR 2015F00070](https://openairdocs.org/sdr/2015F00070), May 20, 2015: Bell 206L3. SHAFT. FAILED. TAILROTOR DRIVE SHAFT FAILED AT NR 5 SECTION. ACFT LOST ALTITUDE FROM 40 FOOT HOVER AND SPUN TO GROUND AND WAS DAMAGED.  (N210MH)

All 1,259: https://openairdocs.org/jasc/6510/reports.md

## Other codes in chapter 65

- [JASC 6500](https://openairdocs.org/jasc/6500): Tail Rotor Drive System (105 reports)
- [JASC 6520](https://openairdocs.org/jasc/6520): Tail Rotor Gearbox (865 reports)
- [JASC 6540](https://openairdocs.org/jasc/6540): Tail Rotor Drive Indicating System (22 reports)
- [JASC 6597](https://openairdocs.org/jasc/6597): Tail Rotor Drive System Wiring (4 reports)

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