# Service difficulty reports: Erickson S-64F

A list on [Erickson S-64F](https://openairdocs.org/model/erickson-s-64f.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 2 · 70 reports

- [SDR JYDR20201013282](https://openairdocs.org/sdr/JYDR20201013282.md): Attach Bolt · broken · Oct 13, 2020 · N159AC · Skrsky S64F · Engine/Transmission Coupling
  > PILOTS SUDDENLY FELT A VIBRATION AND HEARD A HOWLING NOISE. THEY RETURNED TO THE LANDING SITE AND SHUT DOWN. AT INSPECTION, MAINTENANCE FOUND 1 OF 3 NAS628-15 BOLT BROKEN IN HALF ON THE NR 2 HIGH SPEED SHAFT ON THE FORWARD END, WHERE IT ATTACHES TO THE FREE
- [SDR JYDR20201008218](https://openairdocs.org/sdr/JYDR20201008218.md): Engine · overtemp · Oct 7, 2020 · N159AC · Skrsky S64F · Engine (Turbine/Turboprop)
  > AIRCRAFT WAS ON SHORT FINAL AT 50 FT AGL WHEN NR 1 ENGINE LOW SPEED CHIME CAME ON. PILOT NOTED DECREASING N1 RPM WITH RISING T% (ROLLBACK). PROPER ENGINE IDENTIFIED AND SHUT DOWN. RECORDING T5 INDICATOR CHECKED AND FOUND ENGINE HAD REACHED 784C FOR 4 SECOND
- [SDR JYDR20180713190](https://openairdocs.org/sdr/JYDR20180713190.md): Disc · cracked · Jul 11, 2018 · Skrsky S64F · Turbine Engine Compressor Section
  > DURING INSPECTION IAW AD 97-02-13 USING AMOC LETTER. 6 CRACKS WERE FOUND AT THE TIE BOLT THROUGH HOLES. CRACKS WERE FOUND WITH BOTH FPI AND EDDY CURRENT. AD STATES THAT DISK IS TO BE INSPECTED AT OR BEFORE 3000 HOURS TT AND 1500 HOURS THEREAFTER. THIS DISK HA
- [SDR JYDR20170922257](https://openairdocs.org/sdr/JYDR20170922257.md): Cylinder Damper · cracked · Sep 20, 2017 · Skrsky S64F · Main Rotor Head
  > DURING OVERHAUL, A CRACK WAS FOUND IN THE DAMPER BARREL EXTENDING HOLE TO HOLE AND INTO THE CHECK VALVE BORE.
- [SDR JYDR20170831240](https://openairdocs.org/sdr/JYDR20170831240.md): B-Nut · loose · Aug 29, 2017 · Skrsky S64F · Hydraulic System, Main
  > WHEN AIRCRAFT TOUCHED DOWN DURING HOVER LANDING A VIBRATION (IMBALANCE) WAS FELT IN THE ROTOR SYSTEM. PILOT SHUT DOWN AIRCRAFT AND IT WAS TOWED TO MAINTENANCE BASE. MECHANICS FOUND THE B NUT ON THE DAMPER HYDRAULIC ACCUMULATOR QUICK DISCONNECT LOOSE WITH A LOS
- [SDR JYDR20170609239](https://openairdocs.org/sdr/JYDR20170609239.md): Blade · cracked · Jun 8, 2017 · N163AC · Skrsky S64F · Main Rotor Blades
  > MAIN ROTOR BLADE WAS REMOVED FOR BIM INDICATION. BLADE INSPECTED AND A 2.3 INCH CRACK WAS FOUND ON THE SPAR, ON BOTTOM OF BLADE, UNDER POCKET 17, 167.25 INCHES FROM ROOT END.
- [SDR JYDR20170316074](https://openairdocs.org/sdr/JYDR20170316074.md): Axle · failed · Mar 14, 2017 · N171AC · Skrsky S64F · Nose/Tail Landing Gear
  > AIRCRAFT JUST STARTED TO TAXI. AS PILOT RELEASED NOSE WHEEL LOCK THE NOSE WHEEL AXLE BROKE CAUSING LOSS OF NOSE WHEEL. AIRCRAFT WAS STILL ON GROUND AND HAD JUST STARTED TO MOVE. AIRCRAFT SHUT DOWN RESTING ON NOSE LANDING GEAR STRUT.
- [SDR JYDR20160422098](https://openairdocs.org/sdr/JYDR20160422098.md): Bearing Race · cracked · Apr 21, 2016 · N178A · Skrsky S64F · Main Rotor Head
  > FOUND HORIZONTAL HINGE PIN INNER BEARING RACE CRACKED DURING REPAIR. MRH HAD 292.3 HRS. REMAINING TO O/H. MFG HAS BEEN INFORMED.
- [SDR JYDR2013110801239](https://openairdocs.org/sdr/JYDR2013110801239.md): Servo · worn · Nov 8, 2013 · N171AC · Skrsky S64F · Rotorcraft Servo System
  > DURING A SCHEDULED MAIN GEAR BOX CHANGE, THE LT LATERAL PRIMARY SERVO WAS FOUND TO HAVE A SEVERELY WORN BOLT AND BUSHING AT THE LOWER PIVIT FOLLOW UP ARM. SERVO WAS REMOVED FROM SERVICE AND RETURNED TO THE REPAIR STATION FOR INVESTIGATION. THE MFG IS PARTICIP
- [SDR JYDR2013110800239](https://openairdocs.org/sdr/JYDR2013110800239.md): Servo · worn · Nov 8, 2013 · N171AC · Skrsky S64F · Rotorcraft Servo System
  > DURING A SCHEDULED MAIN GEAR BOX CHANGE, THE LT LATERAL PRIMARY SERVO WAS FOUND TO HAVE A SEVERELY WORN BOLT AND BUSHING AT THE LOWER PIVIT FOLLOW UP ARM. SERVO WAS REMOVED FROM SERVICE AND RETURNED TO THE REPAIR STATION FOR INVESTIGATION. THE MFG IS PARTISIP
- [SDR 2006FA0001136](https://openairdocs.org/sdr/2006FA0001136.md): Bearing · cracked · Oct 6, 2006 · N229AC · Skrsky S64F · Tail Rotor Gearbox
  > (REF NR MDR06-089) THE IGB CHIP DETECTOR INDICATED A CHIP LIGHT. IGB WAS REMOVED AND THE INNER RACE WAS FOUND TO BE CRACKED THROUGH AND SPALLED. PROBABLE CAUSE: UNKNOWN. (K)
- [SDR 2005FA0001553](https://openairdocs.org/sdr/2005FA0001553.md): Stator · sheared · Sep 14, 2005 · N179AC · Skrsky S64F · Turbine Engine Compressor Section
  > (REF NR MDR05-080) INSPECTION WAS PERFORMED ON 1ST STAGE STATOR AND SHOWED SIGNS OF FOD. UPON FURTHER INSPECTION IST WAS DETERMINED THAT TWO RIVETS (MFG HEAD) HAD SHEARED ON STIFFENER RING OF THE 1ST STATOR AND WERE INGESTED CAUSING MINOR DAMAGE TO THE LATER
- [SDR 2005FA0000819](https://openairdocs.org/sdr/2005FA0000819.md): Gear · cracked · Apr 14, 2005 · N159AC · Skrsky S64F · Tail Rotor Gearbox
  > TGB AND SERVO ASSY REMOVED FROM ACRFT FOR MAKING METAL. GEARBOX DISASSEMBLED AND DURING VISUAL INSP OF OUTPUT GEAR, ONE TOOTH FOUND CRACKED. FRIVE SIDE OF TOOTH SHOWS THE MAJORITY OF CRACKING, STARTING FROM IB TO ALMOST MIDWAY ON TOOTH EXTENDING ACROSS TIP L
- [SDR 2005FA0000820](https://openairdocs.org/sdr/2005FA0000820.md): Turbine Blades · broken · Apr 13, 2005 · N159AC · Skrsky S64F · Turbine Section
  > COMPRESSOR ASSY WAS REMOVED FROM AC FOR FAILING VIBRATION ANALYSIS. DURING THE PRELIMINARY INSPECTION IT WAS NOTED THAT A PIECE OF 2ND STAGE TURBINE BLADE OUTER SHROUD KNIFE EDGE WAS MISSING. THE MISSING PIECE WAS APPROXIMATELY.500 INCH LONG AND FROM THE AF
- [SDR 2005FA0000340](https://openairdocs.org/sdr/2005FA0000340.md): Bearing Race · cracked · Jan 10, 2005 · N158AC · Skrsky S64F · Main Rotor Head
  > (MDR05-072) THE MRH SLEEVE AND SPINDLE ASSY DEVELOPED AN OIL LEAK WHILE ON AIRCRAFT AND WAS NOTED DURING ROUTE INSPECTION. UPON REMOVAL AND REPLACEMENT WITH A SERVICEABLE ASSY, A CRAK WAS FOUND ON THE INNER RACE. VISUAL INSPECTION SHOWS WEAR AND CORROSION TY
- [SDR JYDRMDR04069](https://openairdocs.org/sdr/JYDRMDR04069.md): Housing · cracked · Dec 6, 2004 · N159AC · Skrsky S64F · Main Rotor Gearbox
  > MGB WAS REMOVED FOR MAIN SHAFT REPLACEMENT AND OVERHAUL. AFTER DISASSEMBLY OF GEAR BOX, THE UPPER HOUSING WAS LOCALLY BLENDED, ETCHED UNDER THE INPUTS AND INSPECTED BY FPI. THE HOUSING WAS REJECTED FOR CRACKS ON THE LT AND RT SIDE. POOR REWELD QUALITY OF CA
- [SDR 2005FA0000000](https://openairdocs.org/sdr/2005FA0000000.md): Bevel Gear · cracked · Nov 30, 2004 · N159AC · Skrsky S64F · Main Rotor Gearbox
  > DURING NDT INSPECTION, GEAR WAS MPI`D AND REJECTED FOR CRACKS. LOCATION OF CRACKS WERE IN ATTACHMENT FLANGE BOLT HOLES (18 EACH). EVERY HOLE HAS APPROXIMATELY.1250 INCH LONG CRACK STARTING ON THE GEAR TO SHAFT ATTACHMENT SIDE EXTENDING DOWN INTO THE HOLE.
- [SDR MDR03032](https://openairdocs.org/sdr/MDR03032.md): Bleed Valve · obstructed · Oct 2, 2004 · N178AC · Skrsky S64F · Compressor Bleed Valve
  > NR 1 ENG OIL PRESS WAS INDICATING LOWER THAN NR 2 ENG. PRESS INDICATED 45 PSI. ADJUSTED PRESS VALVE TO INCREASE CHECK AT NEXT FLT. NR 1 ENG WAS STARTED, INDICATED NML GROUND IDLE. ACCELERATING TO 70 PERCENT N2, OIL PRESS DROPPED OFF, CAUTION LIGHT ILLUM, P
- [SDR 2004F00284](https://openairdocs.org/sdr/2004F00284.md): Spacer · cracked · Jul 15, 2004 · N159AC · Skrsky S64F · Engine (Turbine/Turboprop)
  > COMPRESSOR ASSY WAS REMOVED FROM AN AIRCRAFT FOR A 1000 HOURS SCHEDULED HOT SECTION INSPECTION. DURING TEST RUN, THE ENGINE EXPERIENCED VIBES WHICH WERE OUT OF ACCEPTABLE LIMITS. THE ENGINE WAS DISASSEMBLED AND CHECKED FOR BALANCE AND WAS FOUND TO BE OUT OF
- [SDR 2004F00335](https://openairdocs.org/sdr/2004F00335.md): Seal · broken · Jul 14, 2004 · N159AC · Skrsky S64F · Engine (Turbine/Turboprop)
  > COMPRESSOR ASSY REMOVED FROM A/C FOR A 1000 TSO SCHED HOT SECTION INSP. DURING INSP, EVIDENCE RUBBING BETWEEN OUTER SHROUD OF 1ST STAGE N1 BLADES & 1ST STATE OUTER AIRSEAL KNIFE EDGES. 1 BLADE BROKEN OUTER SHROUD. CONTACT BETWEEN DAMAGED TO OUTER SHROUD OF B
- [SDR MDR03036](https://openairdocs.org/sdr/MDR03036.md): Housing · cracked · Nov 20, 2003 · N223AC · Skrsky S64F · Tail Rotor Gearbox
  > THE TGB CENTER HOUSING WAS FOUND CRACKED WHILE INSTALLED ON THE AIRCRAFT. IT WAS REMOVED PREMATURELY ON DECEMBER 20, 2000. THE SHOP DETECTED THE CRACK VISUALLY. THE CRACK BEGAN AT THE SECOND ROSAN STUD CLOCKWISE FROM THE ROSAN SEAT PAD LOCATED 34 DEGREES FR
- [SDR MDR03029](https://openairdocs.org/sdr/MDR03029.md): Housing · cracked · Nov 20, 2003 · N223AC · Skrsky S64F · Tail Rotor Gearbox
  > TGB CTR HSG FOUND CRACKED WHILE INSTALLED ON AC. IT WAS REMOVED PREMATURELY HAVING A TSO OF 974.7 HR. VISUALLY DETECTED INDIC IN OB WEB OF LT MOUNTING LUG. HSG WAS LOCALLY FPI INSPECTED TO VERIFY. NO IND WAS NOTED. AREA WAS STRIPPED, LIGHTLY ABRADED WITH S
- [SDR MDR03034](https://openairdocs.org/sdr/MDR03034.md): Gear · cracked · Nov 18, 2003 · N159AC · Skrsky S64F · Tail Rotor Gearbox
  > TAIL ROTOR GEARBOX WAS REMOVED FROM AC FOR MAKING METAL. TAIL ROTOR GEARBOX WAS DISASSEMBLED IN THE OVERHAUL SHOP AND VISUALLY FOUND A CRACKED GEAR TOOTH ON THE OUTPUT GEAR. DURING THE MPI INSPECTION, WAS CONFIRMED THE TOOTH WAS CRACKED AND NO OTHER CRACKS WE
- [SDR MDR03031](https://openairdocs.org/sdr/MDR03031.md): Bearing · failed · Oct 2, 2003 · N164AC · Skrsky S64F · Main Rotor Head
  > CREW REMOVED M/R HEAD AFTER LOCK SCREW SECURING LOCK SHEARED FOR SECOND TIME ON SPINDLE ASSY DESIGNATED AS GREEN. DURING TEARDOWN OF GREEN SPINDLE ASSY AFTER REMOVING NUT, SECURING HORIZ HINGE PIN. IT WAS NOTICED BONDED SPLIT LINERS WERE DEBONDED FROM SPINDL
- [SDR MDR03030](https://openairdocs.org/sdr/MDR03030.md): Plate · cracked · Sep 24, 2003 · N178AC · Skrsky S64F · Main Rotor Gearbox
  > DURING THE MAGNETIC PARTICLE INSPECTION OF THE 2ND STAGE PLANETARY PLATE, A CRACK WAS DETECTED. THE CRACK IS LOCATED IN THE.125 INCH R. FROM THERE, IT TRAVELS TOWARDS THE SPLINE AT A 45 DEGREE ANGLE. THEN IT TRAVELS DOWN THE DRIVE SIDE TOOTH FILLET OF THE
- [SDR MDR03028](https://openairdocs.org/sdr/MDR03028.md): Strap · cracked · Aug 12, 2003 · N158AC · Skrsky S64F · Tail Rotor Blades
  > THE STRAP IS CRACKED ON THE INBOARD SIDE OF THE BLADE APPROXIMATELY 9.25 INCHES FROM THE TRAILING EDGE OF THE FAIRING. THE CRACK STARTS AT THE CUFF END OF THE BLADE APPROXIMATELY 1.5 INCHES. THE CRACK STARTS WHERE THE LEADING EDGE OF THE FAIRING, PN 65161-00
- [SDR MDR03027](https://openairdocs.org/sdr/MDR03027.md): Strap · cracked · Aug 12, 2003 · N158AC · Skrsky S64F · Tail Rotor Blades
  > ON THE INBOARD SIDE OF THE BLADE, THERE IS A CRACK IN THE STRAP AND POCKET. THE CRACK STARTS AT THE ROOT END SIDE OF THE STRAP AND EXTENDS 3.75 INCHES TOWARD THE TIP END, INTO THE POCKET. THE CRACK IS 9.25 INCHES FROM THE TRAILING EDGE OF THE FAIRING. CAUSE
- [SDR MDR03024](https://openairdocs.org/sdr/MDR03024.md): Fitting · cracked · Aug 12, 2003 · N179AC · Skrsky S64F · Rotorcraft Tail Boom
  > UPON POST-FLIGHT INSPECTION, FIELD MAINTENANCE PERSONNEL DISCOVERED THE LOWER FITTING TGB, PN 6420-66345-101, CRACKED AT THE AFT LOWER LEFT-HAND CORNER. THE CRACK IS APPROXIAMTELY.5000 INCH IN LENGTH AND TRAVELS THROUGH THE THICK WEB AND TURNS TOWARDS THE LO
- [SDR MDR03018](https://openairdocs.org/sdr/MDR03018.md): Strap · cracked · Jul 3, 2003 · N223AC · Skrsky S64F · Tail Rotor Blades
  > THE STRAP IS CRACKED N THE OUTBOARD SIDE OF THE BLADE, APPROXIMATELY 9.125 INCHES FROM THE TRAILING EDGE. THE CRACK STARTS AT THE CUFF END OF THE BLADE AND EXTENDS APPROXIMATELY 1.25 INCHES TOWARDS THE TIP END OF THE BLADE. THE CRACK STARTS WHERE THE BACK WA
- [SDR JYD2003F00001](https://openairdocs.org/sdr/JYD2003F00001.md): Pressure Panel · cracked · Mar 4, 2003 · N158AC · Skrsky S64F · Fuselage Main, Bulkhead
  > PRESSURE PLATE (PN 65101-11016-041) FOUND CRACKED. MAIN ROTOR HEAD (MRH) REMOVED FROM SERVICE DUE TO SEVERE STORM DAMAGE WITH A TT 3772.9 AND A TSO 754. DURING OVERHAUL OF MRH, A CRACK INDICATION WAS DETECTED IN PRESSURE PLATE (PN 65101-11016-041) DURING FLU
- [SDR JYD2002F00001](https://openairdocs.org/sdr/JYD2002F00001.md): Support · cracked · Dec 6, 2001 · N157AC · Skrsky S64F · Main Rotor Gearbox
  > 3 CRACKS WERE FOUND IN LWR SUPPT E MODEL MN GEARBOX WAS REMOVED FROM SERVICE FOR O/H IN1995. IN DECEMBER OF 2001, SUPPT WAS MACHINED TO REMOVE CORROSION. AFTER MACHINING, CRACK WAS VISUALLY DETECTED IN MOUNTING LUG HOLE NR 4 AS INSTALLED ON AC. FLUORESCENT
- [SDR 2002F00105](https://openairdocs.org/sdr/2002F00105.md): Support · cracked · Dec 6, 2001 · N157AC · Skrsky S64F · Main Rotor Gearbox
  > 3 CRACKS WERE FOUND IN LOWER SUPPORT OF MAIN ROTOR GEARBOX.
- [SDR 20010613CW018](https://openairdocs.org/sdr/20010613CW018.md): Blade · cracked · May 21, 2001 · N159AC · Skrsky S64F · Main Rotor Blades
  > REMOVED FROM AIRCRAFT FOR BIM INDICATION. PERFORMED LEAK CHECK. DETECTED LEAK AND FOUND CRACK. CRACK IS CHORDWISE, AND.5000 INCH LONG WITH CORROSION PIT LOCATED IN CENTER. LOCATION OF CRACK IS 23.5 INCHES FROM TIP END ON BOTTOM SIDE OF BLADE AND 4 INCHES
- [SDR JYD2001F00000](https://openairdocs.org/sdr/JYD2001F00000.md): Hinge Pin · cracked · May 10, 2001 · N223AC · Skrsky S64F · Main Rotor Head
  > S-64F MAIN ROTOR HEAD HINGE PINS DO OCCASIONALLY CRACK FROM DAMPER NUT SAFETY HOLES (APPROX 15 PER CENT OF THE TIME), BUT TYPICALLY THE CRACKS TRAVEL OUTBOARD TO THE EDGE OF THE HINGE PIN. HINGE PIN SN A04100236 CRACKED INBOARD THROUGH THE THREADS INTO THE TH
- [SDR 20010606CW005](https://openairdocs.org/sdr/20010606CW005.md): Hinge Pin · cracked · May 10, 2001 · N223AC · Skrsky S64F · Main Rotor Head
  > S-64F MAIN ROTOR HEAD HINGE PINS DO OCCASIONALLY CRACK FROM DAMPER NUT SAFETY HOLES (APPROX. 15 PERCENT OF THE TIME), BUT TYPICALLY THE CRACKS TRAVEL OUTBOARD TO THE EDGE OF THE HINGE PIN. HINGE PIN SN A041-00236 CRACKED INBOARD THROUGH THE THREADS INTO THE T
- [SDR 20010427CW007](https://openairdocs.org/sdr/20010427CW007.md): Shaft · cracked · Feb 6, 2001 · N223AC · Skrsky S64F · Main Rotor Mast/Swashplate
  > DURING OVERHAUL, MAGNETIC PARTICLE INSPECTION REVEALED MULTIPLE INDICATION IN THE LOWER SPLINE AREA OF MAIN ROTOR SHAFT. LONGEST INDICATION MEASURED APPROX.500 INCH IN LENGTH, BEGINNING IN THE ROOT AREA EXTENDING OVER SPLINE FACE, DOWN TO THE NEXT ADJACENT R
- [SDR 20001018SH029](https://openairdocs.org/sdr/20001018SH029.md): Gear · failed · Aug 16, 2000 · N163AC · Skrsky S64F · Main Rotor Gearbox
  > 1ST STAGE PLANETARY PINION GEAR, PN 6435-20411-102, SN 1524, UNKNOWN TT, FAILED IN MAIN GEARBOX, PN 6435-20500-049, SN A6-165, LEAVING LARGE FRAGMENT OF FERROUS METAL IN SUMP, SUMP SCREEN. TEARDOWN INSP REVEALED ENTIRE TOOTH FRACTURED AT JUNCTION OF CASE TO C
- [SDR 20000511SH040](https://openairdocs.org/sdr/20000511SH040.md): Planetary Gear · fractured · Apr 24, 2000 · N158AC · Skrsky S64F · Main Rotor Gearbox
  > 1ST STAGE PLANETARY PINION GEAR, PN 6435-20411-102, SN 1477, HAVING AN UNKNOWN TT, FAILED IN MAIN GEARBOX, PN 6435-20500-048, SN A6-161. INSP REVEALED TWO-THIRDS OF A 1ST STAGE PLANETARY PINION GEAR TOOTH FRACTURED CAUSING REPLACMENT OF THE FOLLOWING ITEMS DU
- [SDR 98ZZZX3342](https://openairdocs.org/sdr/98ZZZX3342.md): Bearing · damaged · Aug 6, 1998 · N157AC · Skrsky S64F · Turbine Engine Compressor Section
  > BEARING REMOVED FROM AN ENGINE DURING REPAIR WITH A TOTAL BEARING TIME OF 1,449.4 HOURS WITH NO PREVIOUS OVERHAULS. NO OTHER BEARING IN THE ENGINE WAS DISCREPANT. DURING OVERHAUL, THE BEARING WAS INSPECTED AND ONE UNUSUAL CONDITION WAS FOUND: THE BALLS EXHI
- [SDR 98ZZZX2812](https://openairdocs.org/sdr/98ZZZX2812.md): Rollers · worn · Jul 6, 1998 · N159AC · Skrsky S64F · Alternator-Generator Drive
  > SUBMITTER STATED THIS MDR AFFECTS S-64E MODEL. ACFT WAS FLYING UNDER NORMAL CONDITIONS WHEN NR 1 AND NR 2 GEN WENT OFF-LINE AND INVERTER POWER WAS NEEDED FOR A/C TO RETURN TO LANDING. INITIAL INSP REVEALED ALL WIRES CONNECTED AND CB'S IN CORRECT POSITIONS.
- [SDR 98ZZZX2832](https://openairdocs.org/sdr/98ZZZX2832.md): Blade · failed · Jun 30, 1998 · Skrsky S64F · Main Rotor Blades
  > NOTE: THE ACRONYM 'BIM' STANDS FOR BLADE INSPECTION METHOD AND IS A TERM REGISTERED BY SIKORSKY. THE INDICATOR SENSES PRESSURE WITHIN THE BLADE SPAR AND CHANGES COLOR TO DENOTE A LEAK WHICH MAY BE CAUSED BY A CRACKED SPAR INDICATING THIS MDR SUBJECT HAS AIRW
- [SDR 98ZZZX2255](https://openairdocs.org/sdr/98ZZZX2255.md): Blade · fractured · Apr 24, 1998 · N159AC · Skrsky S64F · Turbine Engine Compressor Section
  > ON 4-24-98, AIRCRAFT WAS ON A FIRE FIGHTING MISSION. DURING CLIMB-OUT, A LOUD 'BANG' SOUND OCCURRED, FOLLOWED BY A LEFT YAW. THE LOAD OF WATER WAS JETTISONED AND PILOTS PUSHED MAXIMUM BEEP ON BOTH ENGINES. THE NR 1 ENG WAS CARRYING THE LOAD. THE NR 2 ENG R
- [SDR 98ZZZX1742](https://openairdocs.org/sdr/98ZZZX1742.md): Blade · cracked · Apr 22, 1998 · N157AC · Skrsky S64F · Main Rotor Blades
  > MAIN ROTOR SPAR IS CRACKED 72.81 INCHES FROM TIP UNDER THE NR 6 POCKET, CLOSE (APPROXIMATELY.1 INCH) TO THE SPACE BETWEEN THE NR 6 AND NR 7 POCKETS. THE CRACK RUNS CHORDWISE BETWEEN THE POCKET LEADING EDGE GROOVE, AND THE BACKWALL RADIUS. IT DOES NOT APPEAR
- [SDR 98ZZZX1743](https://openairdocs.org/sdr/98ZZZX1743.md): Center Housing · cracked · Apr 15, 1998 · N178AC · Skrsky S64F · Tail Rotor Gearbox
  > TAIL ROTOR GEARBOX WAS REMOVED FROM AIRCRAFT DUE TO A CRACK IN THE TAIL GEARBOX CENTER HOUSING WEB ADJACENT TO THE LOWER LEFT GEARBOX ATTACHMENT LUG. ENGINEERING REQUESTED THE QUALITY DEPARTMENT HELP FIND THE CRACKED AREA BECAUSE IT WAS NOT MARKED ON THE PART
- [SDR 98ZZZX68](https://openairdocs.org/sdr/98ZZZX68.md): Case · cracked · Dec 9, 1997 · N178AC · Skrsky S64F · Turbine Section
  > WHILE INSTALLED, AFT FLANGE OF CASE SN 225 FRACTURED 360 DEGREES WITHIN THE FLANGE WELD JOINT. FRACTURING OF AFT FLANGE ASSY ELIMINATED THE AFT MOUNT FROM ENG SUPPORT. ENG FREE TO MOVE VERTICALLY, LATERALLY, AND FORE AND AFT, UNRESTRAINED BY AFT MOUNT. THIS
- [SDR 97ZZZX4347](https://openairdocs.org/sdr/97ZZZX4347.md): Bracket Bolt · cracked · Sep 17, 1997 · N159AC · Skrsky S64F · Main Rotor Head
  > DURING OVERHAUL OF THE MAIN ROTOR HEAD, A FLUORESCENT MAGNETIC PARTICLE INSPECTION REVEALED A TOTAL OF 4 CRACK INDICATIONS IN BOLT HEAD TO SHANK RADIUS. LARGEST CRACK IS 0.200 INCH IN LENGTH RADIALLY AROUND SHANK. THREE SMALL CRACKS ARE 0.040 INCH LONG EACH.
- [SDR 97ZZZX3377](https://openairdocs.org/sdr/97ZZZX3377.md): Main Shaft · cracked · Jul 10, 1997 · N159AC · Skrsky S64F · Main Rotor Gearbox
  > PART WAS MPI'D AND FOUND TO HAVE ONE CRACK INDICATION LOCATED AT THE UPPER END OF THE LOWER SPLINES. THE INDICATION EXTENDS FROM THE SPLINE RADIUS AND GOES TOWARD THE TOOTH FACE AT APPROXIMATELY A 45 DEGREE ANGLE. LENGTH OF INDICATION IS APPROXIMATELY 0.050
- [SDR 97ZZZX3013](https://openairdocs.org/sdr/97ZZZX3013.md): Blade · cracked · Jun 13, 1997 · N159AC · Skrsky S64F · Main Rotor Blades
  > BLADE OPERATED BY ERICKSON FOR APPROXIMATELY 350.0 HOURS AND WAS REMOVED FOR A BLACK BIM INDICATION. A NITROGEN LEAK WAS DETECTED BETWEEN BLADE POCKETS NR 24 AND NR 25 ON THE LOWER SPAR SURFACE. IT APPEARED TO ORIGINATE UNDER AN APPROVED MILITARY APPLIED PAT
- [SDR JYDR970328](https://openairdocs.org/sdr/JYDR970328.md): Main Shaft · cracked · Mar 17, 1997 · N163AC · Skrsky S64F · Main Rotor Gearbox
  > CRACKS FOUND IN LOWER SPLINES. CRACKS APPEAR TO START IN SPLINE RADIUS AND TRAVEL AT 45 DEGREES TOWARD THE SPLINE TOOTH. INDICATIONS ARE ON THE LOAD SIDE JUST AT OR BELOW ENGAGEMENT AREA. ELEVEN SPLINES WITH INDICATIONS. LONGEST INDICATION IS 0.150 INCH LO
- [SDR 97ZZZX2478](https://openairdocs.org/sdr/97ZZZX2478.md): Main Shaft · cracked · Mar 17, 1997 · N163AC · Skrsky S64F · Main Rotor Gearbox
  > MGB MAIN SHAFT INSPECTION, CRACKS FOUND IN LOWER SPLINES. CRACKS APPEAR TO START IN SPLINE RADIUS AND TRAVEL AT 45 DEGREES TOWARD THE SPLINE TOOTH. INDICATIONS ARE ON THE LOAD SIDE JUST AT OR BELOW ENGAGEMENT AREA. ELEVEN SPLINES WITH INDICATIONS. LONGEST

Next page: https://openairdocs.org/model/erickson-s-64f/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = 'S64F'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/erickson-s-64f/reports

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