# JASC 6210: Main Rotor Blades - Type: JASC system/component code (FAA) - ATA chapter: 62 Main Rotor - Title in the code table: MAIN ROTOR BLADES - Service difficulty reports: 1,561 - FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=57 - Page: https://openairdocs.org/jasc/6210 ## What it covers For reports of defective blades including attachment to the rotor head and heating mats on the blades for anti-icing. Also includes tilt rotor blades. Does not include the anti-icing system which is filed in JASC code 3060, or the rotor head which is filed in JASC code 6220. Typical parts are blade, attach bolt, bushing, etc. ## Service difficulty reports (1,561, newest 50) - [SDR QR9R2026092300001](https://openairdocs.org/sdr/QR9R2026092300001), Sep 23, 2026: Bolkms BK117C2. BLADE. FAILED. M/R BLADE WAS RECEIVED FROM SUPPLY AND FAILED RESISTANCE CHECK. - [SDR 8HBR20260830087](https://openairdocs.org/sdr/8HBR20260830087), Aug 17, 2026: Robsin R22BETA. BEARING. BRINELLED. SPINDLE BEARINGS FOUND BRINELLED AFTER REPORTS OF VIBRATIONS IN CONTROLS (N8072X) - [SDR 8HBR20260628085](https://openairdocs.org/sdr/8HBR20260628085), Jun 17, 2026: Robsin R22BETA. BEARING. BRINELLED. PILOTS REPORTED VIBRATIONS IN THE CYCLIC CONTROL. INSPECTION OF THE MAIN ROTOR BLADE SPINDLE BEARINGS SHOWED BRINELLED B (N922DD) - [SDR 8HBR20260614084](https://openairdocs.org/sdr/8HBR20260614084), Jun 7, 2026: Robsin R22BETA. BEARING. BRINELLED. PILOTS REPORTED VIBRATIONS IN THE CYCLIC CONTROLS, UPON INSPECTION IT WAS FOUND THAT ONE SET OF SPINDLE BEARINGS ON ONE (N924SH) - [SDR 2A6R2026060475601](https://openairdocs.org/sdr/2A6R2026060475601), Jun 3, 2026: Urocop EC135T2. LINER. CRACKED. POST REMOVING DAMAGED TEFLON LINER ON BLADE. DISCOVERED CRACK ON WEDGE ON WEDGE OF UPPER TRAILING BUSH HOLE TO OUTER ROV (N831ME) - [SDR PN1R202605120001](https://openairdocs.org/sdr/PN1R202605120001), May 12, 2026: Aerosp AS355*. BOLT. UNSERVICEABLE. ON TWO SEPARATE OCCASIONS, ON THE AS350B3, 6EA MAIN ROTOR STARFLEX ATTACHMENT BOLTS WERE FOUND TO BE UNSERVICEABLE. NOTE (N568AE) - [SDR 8HBR20260426082](https://openairdocs.org/sdr/8HBR20260426082), Apr 22, 2026: Robsin R22BETA. BEARING. BRINELLED. PILOTS REPORTED VIBRATIONS IN THE CYCLIC, UPON INSPECTION IT WAS FOUND THAT ONE OF THE MAIN ROTOR BLADES HAD BRINELLED S (N7148A) - [SDR 2026FA0000248](https://openairdocs.org/sdr/2026FA0000248), Mar 31, 2026: Hughes 369E. BLADE. DENTED. AT LANDING PILOT REPORTED MAIN BLADE CONTACT WITH TREE BRANCHES WITH NO CHANGE IN RPM. MECHANIC DETERMINED PER MDHI CSP (N842JH) - [SDR PN1R202603270001](https://openairdocs.org/sdr/PN1R202603270001), Mar 27, 2026: Urocop BK117C1EURO. BLADE. CRACKED. DURING INSPECTION, FOUND CRACK IN COPPER SURFACE PROTECTION ON TOP SIDE OF RED MAIN ROTOR BLADE FLEX CONTROL UNIT (FCU). (N3KA) - [SDR QR9R2026022300001](https://openairdocs.org/sdr/QR9R2026022300001), Feb 23, 2026: Bolkms BK117C2. BOLT. CRACKED. NDI INSPECTION REVEALED HEX BOLT WAS FOUND TO BE CRACKED. - [SDR QR9R2026020600002](https://openairdocs.org/sdr/QR9R2026020600002), Feb 6, 2026: Bolkms BK117C2. BOLT. CRACKED. HEX BOLT WAS FOUND TO BE CRACKED DURING NDI INSPECTION. - [SDR QR9R2026020600001](https://openairdocs.org/sdr/QR9R2026020600001), Feb 6, 2026: Bolkms BK117C2. BOLT. CRACKED. NDI INSPECTION REVEALED HEX BOLT WAS CRACKED. - [SDR QR9R2026020200001](https://openairdocs.org/sdr/QR9R2026020200001), Feb 2, 2026: Bolkms BK117C2. BOLT. CRACKED. NDI INSPECTION REVEALED HEX BOLT WAS CRACKED. - [SDR QR9R2026012800001](https://openairdocs.org/sdr/QR9R2026012800001), Jan 28, 2026: Bolkms BK117C2. BOLT. CRACKED. NDI INSPECTION REVEALED HEX BOLT WAS CRACKED ON THREADS. - [SDR QMLA2025111620114](https://openairdocs.org/sdr/QMLA2025111620114), Nov 15, 2025: Doug MD900. BLADE. DELAMINATED. TRIM TAB SECTION ON MRB NR 4 WAS DISCOVERED TO BE DELAMINATED ON POST FLIGHT WALK AROUND. REMOVED AND REPLACED MRB. (N902CH) - [SDR 2025FA0000717](https://openairdocs.org/sdr/2025FA0000717), Oct 15, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARINGS P/N A159-3, TSN: 1406.9 BRINELLED. NO OVER SPEEDS (N147SH) - [SDR 2025FA0000716](https://openairdocs.org/sdr/2025FA0000716), Oct 15, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARINGS P/N A159-3, TSN: 1449.7 BRINELLED. NO OVER SPEEDS (N115SH) - [SDR 2025FA0000715](https://openairdocs.org/sdr/2025FA0000715), Oct 15, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARINGS P/N A159-3, TSN: 1064.8, BRINELLED. NO OVER SPEEDS (N184SH) - [SDR 2025FA0000714](https://openairdocs.org/sdr/2025FA0000714), Oct 15, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/NA159-3, TSN: 1113.0, BRINELLED. NO OVER SPEEDS. (N184SH) - [SDR 2025FA0000706](https://openairdocs.org/sdr/2025FA0000706), Oct 10, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3, TSN: 2122.6, BRINELLED, NO OVER SPEEDS (N183LE) - [SDR 2025FA0000705](https://openairdocs.org/sdr/2025FA0000705), Sep 10, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3, TSN: 221.3, BRINELLED (N3040K) - [SDR QR9R2025080400001](https://openairdocs.org/sdr/QR9R2025080400001), Aug 4, 2025: Bolkms BK117C2. BLADE. CRACKED. BLUE MAIN ROTOR BLADE HAS CRACK ON TOP SIDE OF BLADE NEAR ROOT OUTSIDE OF PU FILM NEAR VIBRATION ABSORBER. RE-VERIFIED B - [SDR 8HBR202500721072](https://openairdocs.org/sdr/8HBR202500721072), Jul 20, 2025: Robsin R22BETA. BEARING. BRINELLED. VISUAL INSPECTION OF MAIN ROTOR BLADE SPINDLE ASSEMBLIES FOUND SPINDLE BEARINGS OF 1 OF THE 2 BLADES TO BE BRINELLED, TH (N7155W) - [SDR 8HBR20250630070](https://openairdocs.org/sdr/8HBR20250630070), Jun 29, 2025: Robsin R22BETA. BEARING. BRINELLED. VISUAL INSPECTION OF MAIN ROTOR BLADE SPINDLE ASSEMBLIES FOUND SPINDLE BEARINGS TO BE BRINNELED. SPINDLE BEARINGS AND SP (N603HH) - [SDR EVCA20250530001](https://openairdocs.org/sdr/EVCA20250530001), May 28, 2025: Bell 407. BLADE. DAMAGED. CRACK FOUND 3/8" FROM THE AFT BLADE BOLE AREA IN NON-REPAIRABLE AREA OF MAIN ROTOR BLADE. (N190AE) - [SDR 2025FA0000350](https://openairdocs.org/sdr/2025FA0000350), May 11, 2025: Robsin R22. BEARING. BRINELLED. THE SPINDLE BEARINGS WERE REPLACED ON BOTH BLADES ABOUT 200 HOURS AGO. AT THIS 100-HOUR INSPECTION, A FLIGHT TEST FOUND - [SDR QR9R2025050200001](https://openairdocs.org/sdr/QR9R2025050200001), May 2, 2025: Bolkms BK117C2. BLADE. CRACKED. GREEN M/R BLADE HAS CRACK AT BLADE ROOT NEAR THE P/U FILM. REMOVED AND REPLACED M/R BLADE IAW AMM 62-10-00, 4-1. - [SDR QR9R2025040700001](https://openairdocs.org/sdr/QR9R2025040700001), Apr 7, 2025: Bolkms BK117C2. BLADE. CRACKED. DURING INSPECTION OF M/R BLADE, MAINTENANCE DETECTED GREEN MAIN ROTOR BLADE HAS HORIZONTAL CRACK ON TRAILING EDGE FROM G - [SDR QR9R2025032500002](https://openairdocs.org/sdr/QR9R2025032500002), Mar 25, 2025: Bolkms BK117C2. BLADE. CRACKED. YELLOW MAIN ROTOR BLADE HAS SPANWISE CRACK EXTENDING UNDER BLADE FITTING. REMOVED AND REPLACED M/R BLADE ASSY IAW AMM 62 - [SDR QR9R2025032500001](https://openairdocs.org/sdr/QR9R2025032500001), Mar 25, 2025: Bolkms BK117C2. BLADE. CRACKED. RED MAIN ROTOR BLADE CRACKED AT UPPER SURFACE BETWEEN BLADE FITTING AND BLADE CUFF. VERIFIED CRACKED AFTER SANDING IAW A - [SDR QMLA2025021720018](https://openairdocs.org/sdr/QMLA2025021720018), Feb 17, 2025: Urocop EC135T2. BLADE. DAMAGED. OBJECT STRUCK ON FINAL APPROACH TO JEFFERSON UNIVERSITY HOSPITAL. UPON SHUTDOWN, DAMAGE WAS NOTED TO THE TOP OF THE FUSE (N405TJ) - [SDR 2025FA0000704](https://openairdocs.org/sdr/2025FA0000704), Feb 5, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3. TSN: 120.1, BRINELLED (N3040K) - [SDR 2025FA0000703](https://openairdocs.org/sdr/2025FA0000703), Feb 5, 2025: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3. TSN: 120.1, BRINELLED (N3040K) - [SDR 2025FA0000702](https://openairdocs.org/sdr/2025FA0000702), Oct 12, 2024: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3, TSN: 1743.0, BRINELLED. NO OVER SPEEDS REPORTED (N3040K) - [SDR 2024FA0000725](https://openairdocs.org/sdr/2024FA0000725), Sep 17, 2024: Bolkms BK117C2. BLADE. DAMAGED. DURING WALK AROUND BEFORE A FLIGHT THE PILOT NOTED THAT THE CREST COWLING HAD OPENED DURING SOME POINT AND STRUCK THE MR (N145CH) - [SDR 2024FA0000685](https://openairdocs.org/sdr/2024FA0000685), Sep 4, 2024: Robsin R22BETAII. BEARING. BRINELLED. BRINELLED MAIN ROTOR BLADE SPINDLE BEARINGS.TSN: 163.3 (N460LE) - [SDR EVCA202406240001](https://openairdocs.org/sdr/EVCA202406240001), Jun 24, 2024: Bell 206L3. BLADE. CRACKED. M/R BLADE INBOARD TRIM TABS CRACKED (N271AE) - [SDR 3GMA2024031101](https://openairdocs.org/sdr/3GMA2024031101), Mar 11, 2024: Bolkms BK117C2. BLADE. DAMAGED. WHILE ON FINAL APPROACH TO KUNV AT 1420 LT, LOUD BANG WAS HEARD FOLLOWED BY RYTHMIC NOISE FROM ROTOR SYSTEM. INCIDENT OC (N482LF) - [SDR QMLA2024030120023](https://openairdocs.org/sdr/QMLA2024030120023), Mar 1, 2024: Bell 407. HUB. WORN. ENROUTE TO BASE, DEVIATED TO AIRPORT/COMPANY HANGAR DUE TO EXCESSIVE VERTICAL AND LATERAL VIBRATION IN FORWARD FLIGHT AT (N105AM) - [SDR QR9R2023122800001](https://openairdocs.org/sdr/QR9R2023122800001), Dec 28, 2023: Bolkms BK117C2. SCREW. MISMANUFACTURED. DURING INSTALLATION, MAINTENANCE DETECTED THE HEX HEAD SCREW COTTER PIN HOLE WAS HIGHER/CLOSER TO THE TOP/HEAD OF THE BO - [SDR HDNA20231214001](https://openairdocs.org/sdr/HDNA20231214001), Dec 12, 2023: Urocop EC135P2. NUT. LOOSE. PILOT MADE A PRECAUTIONARY LANDING AFTER NOTING AN INCREASING MAIN ROTOR VIBRATION. AMTS DISCOVERED THE HARDWARE LOOSE S (N586WH) - [SDR EVCA20231204002](https://openairdocs.org/sdr/EVCA20231204002), Dec 4, 2023: Bell 206L4. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD AND OUTBOARD TRIM TAB CRACKED (N416AE) - [SDR EVCA202312040001](https://openairdocs.org/sdr/EVCA202312040001), Dec 4, 2023: Bell 206L4. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD TRIM TAB CRACKED (N416AE) - [SDR 2025FA0000708](https://openairdocs.org/sdr/2025FA0000708), Nov 25, 2023: Robsin R22BETAII. BEARING. BRINELLED. FOUND BOTH SPINDLE BEARING SETS P/N A159-3, TSN: 730.4, BRINELLED (N115LE) - [SDR EVCA2023110931](https://openairdocs.org/sdr/EVCA2023110931), Nov 8, 2023: Bell 206L4. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD TRIM TAB CRACKED (N460AE) - [SDR EVCA202311090001](https://openairdocs.org/sdr/EVCA202311090001), Nov 8, 2023: Bell 206L4. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD TRIM TAB CRACKED (N460AE) - [SDR EVCA103120231](https://openairdocs.org/sdr/EVCA103120231), Oct 30, 2023: Bell 206L1. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD TRIM TABS CRACKED (N32AE) - [SDR EVCA202310310002](https://openairdocs.org/sdr/EVCA202310310002), Oct 30, 2023: Bell 206L1. BLADE. CRACKED. VAN HORN M/R BLADE INBOARD TRIM TABS CRACKED (N32AE) - [SDR 2023FA0000682](https://openairdocs.org/sdr/2023FA0000682), Oct 26, 2023: Robsin R22BETAII. BEARING. BRINELLED. IN FLIGHT VIBRATION. FOUND SPINDLE BEARINGS BRINELLED. NO OVER SPEEDS REPORTED. MRB P/N A016-6, S/N 6841 & S/N 6861. SPI (N552LE) - [SDR ICRR202310060001](https://openairdocs.org/sdr/ICRR202310060001), Oct 6, 2023: PIN. CRACKED. A CRACK WAS DISCOVERD DURING PENETRANT INSPECTION PER SPM 710-32-02 All 1,561: https://openairdocs.org/jasc/6210/reports.md ## Other codes in chapter 62 - [JASC 6200](https://openairdocs.org/jasc/6200): Main Rotor System (168 reports) - [JASC 6220](https://openairdocs.org/jasc/6220): Main Rotor Head (2,052 reports) - [JASC 6230](https://openairdocs.org/jasc/6230): Main Rotor Mast/Swashplate (1,271 reports) - [JASC 6240](https://openairdocs.org/jasc/6240): Main Rotor Indicating System (677 reports) - [JASC 6297](https://openairdocs.org/jasc/6297): Main Rotor System Wiring (8 reports) --- 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.