# Sikorsky S-58ET - Type: Aircraft model (FAA registry) - Registry code: 8141803 - Manufacturer (registry): SIKORSKY - Model: S-58ET - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Turbo-shaft - Seats: 14 - Weight class: 12,500 to 19,999 lb - Cruise speed: 81 mph - Certification: Type certificated - Data sheet: [TCDS 1H11](https://openairdocs.org/tcds/1H11) (OpenAirDocs) - Holder: Centerpointe Aerospace Inc. - Registered aircraft: 3 - Page: https://openairdocs.org/model/sikorsky-s-58et Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2024-12-10](https://openairdocs.org/ad/2024-12-10): Main Rotor Drive System · Centerpointe Aerospace S-58BT, S-58DT, S-58ET and 3 more. Effective Aug 26, 2024 - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 95-26-08](https://openairdocs.org/ad/95-26-08): Main Rotor Shaft · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Jan 4, 1996 - [AD 95-10-09](https://openairdocs.org/ad/95-10-09): Transmission Main Gear Box Ring Gear · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Jun 16, 1995 - [AD 94-12-07](https://openairdocs.org/ad/94-12-07): Gear Box Assembly · Sikorsky S-58BT, S-58DT, S-58ET and 3 more. Effective Aug 1, 1994 - [AD 89-25-01](https://openairdocs.org/ad/89-25-01): Engine Fire Extinguishing System · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Dec 26, 1989 - [AD 60-17-03 R1](https://openairdocs.org/ad/60-17-03-R1): Main Rotor Blade Assemblies · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Feb 2, 1989 - [AD 64-02-06 R1](https://openairdocs.org/ad/64-02-06-R1): Pylon and Tail Cone Fittings · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Dec 27, 1988 - [AD 86-25-05](https://openairdocs.org/ad/86-25-05): Gearbox Pinions Or Gears · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Jan 5, 1987 - [AD 85-17-08](https://openairdocs.org/ad/85-17-08): Main Rotor Head Bolts · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Jan 13, 1986 - [AD 82-01-07](https://openairdocs.org/ad/82-01-07): Horizontal Hinge Pins · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Feb 1, 1982 - [AD 78-21-05](https://openairdocs.org/ad/78-21-05): Tail Rotor Blades · Sikorsky S-58BT, S-58DT, S-58ET and 3 more. Effective Nov 30, 1978 - [AD 78-05-01](https://openairdocs.org/ad/78-05-01): Fuel Bypass Lines · Sikorsky S-58BT, S-58DT, S-58ET and 3 more. Effective Mar 31, 1978 - [AD 74-15-06](https://openairdocs.org/ad/74-15-06): Tail Rotor Gear Box · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Dec 30, 1977 - [AD 75-13-01](https://openairdocs.org/ad/75-13-01): Main Rotor Assembly · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective May 20, 1977 - [AD 75-07-08](https://openairdocs.org/ad/75-07-08): Tail Assembly · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Apr 8, 1975 - [AD 75-07-07](https://openairdocs.org/ad/75-07-07): Emergency Hatch Handles · Sikorsky S-58B, S-58BT, S-58D and 9 more. Effective Apr 8, 1975 - [AD 59-16-04](https://openairdocs.org/ad/59-16-04): Damper Trunnion Bolt · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Apr 8, 1975 - [AD 66-19-04](https://openairdocs.org/ad/66-19-04): Tail Rotor Blades · Sikorsky S-58A, S-58B, S-58BT and 20 more. Effective Aug 14, 1966 - [AD 61-01-03](https://openairdocs.org/ad/61-01-03): Input Bevel Gear · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Dec 30, 1960 - [AD 60-24-04](https://openairdocs.org/ad/60-24-04): Electrical Cable · Sikorsky S-58A, S-58B, S-58BT and 12 more. Effective Nov 28, 1960 - [AD 57-19-02](https://openairdocs.org/ad/57-19-02): Engine Cooling Fan Assembly · Sikorsky S-58A, S-58B, S-58BT and 12 more Historical (superseded or no longer in force): - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 ## Registered aircraft (3) - [N1168U](https://openairdocs.org/aircraft/N1168U): [Heli-Flite Inc](https://openairdocs.org/faa-owner/HELI-FLITE%20INC), [Corona, CA](https://openairdocs.org/faa-place/CA/Corona), built 1958, S/N 58-1070 - [N58AH](https://openairdocs.org/aircraft/N58AH): [B&B Helos LLC](https://openairdocs.org/faa-owner/B%26B%20HELOS%20LLC), [Perris, CA](https://openairdocs.org/faa-place/CA/Perris), built 1956, S/N 58-328 - [N6BL](https://openairdocs.org/aircraft/N6BL): [5 State Helicopters Inc](https://openairdocs.org/faa-owner/5%20STATE%20HELICOPTERS%20INC), [Royse City, TX](https://openairdocs.org/faa-place/TX/Royse%20City), built 1962, S/N 581567 ## NTSB investigations (8) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR19LA255](https://openairdocs.org/ntsb/WPR19LA255), Sep 11, 2019: Sikorsky S58 (N1168U), Azusa, CA, substantial damage. Probable cause: The in-flight separation of a section of the tail rotor blade due to a fatigue crack, which resulted in the pilot’s forced autorotation into a field. - [NTSB WPR11FA163](https://openairdocs.org/ntsb/WPR11FA163), Mar 13, 2011: Sikorsky S-58ET (N33602), El Segundo, CA, substantial damage. Probable cause: A partial loss of engine power and the failure of the external hook to release the load for undetermined reasons. - [NTSB LAX03FA232](https://openairdocs.org/ntsb/LAX03FA232), Jul 12, 2003: Sikorsky S-58ET (N15AH), Rancho P.Verdes, CA, destroyed. Probable cause: A total loss of antitorque control, due to the fatigue-induced failure of a gear within the drive shaft's intermediate gear box (IGB). Contributing factors were the pilot's improper on-ground… - [NTSB CHI02FA189](https://openairdocs.org/ntsb/CHI02FA189), Jul 10, 2002: Sikorsky S-58ET (N580US), Brookville, IN, substantial damage, 1 fatal. Probable cause: The pilot's intentional low altitude fight and his failure to maintain clearance from power transmission lines. Factors to the accident were the power transmission lines followed by the inability to… - [NTSB LAX94FA106](https://openairdocs.org/ntsb/LAX94FA106), Jan 28, 1994: Sikorsky S-58 (N4995G), San Jose, CA, destroyed, 1 fatal. Probable cause: THE PILOT'S INADEQUATE PREFLIGHT PLANNING/PREPARATION AND SUBSEQUENT FUEL STARVATION, DUE TO AN INADEQUATE SUPPLY OF FUEL. A FACTOR RELATED TO THE ACCIDENT WAS: THE PROXIMITY OF HIGH OBSTRUCTIONS. - [NTSB LAX89FA160](https://openairdocs.org/ntsb/LAX89FA160), Apr 15, 1989: Sikorsky S-58ET (N1168U), Santa Ana, CA, substantial damage. Probable cause: FAILURE OF THE LANDING GEAR RESULTING FROM EXCESSIVE LOADING DURING GROUND OPERATIONS, AND FATIGUE CRACKING. - [NTSB MIA85FA153](https://openairdocs.org/ntsb/MIA85FA153), Apr 20, 1985: Sikorsky S-58ET (N65526), Gulf Of Mexico, destroyed, 3 fatal - [NTSB DEN79FA001](https://openairdocs.org/ntsb/DEN79FA001), Oct 1, 1978: Sikorsky S58ET (N47783), Steamboat Spgs, CO, destroyed, 1 fatal ## FAA accident and incident reports (12) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20190911012989A](https://openairdocs.org/incident/20190911012989A), Sep 11, 2019: Sikorsky S-58ET (N1168U), Azusa, CA, Substantial damage. The aircraft was in level cruise at about 1000 ft. AGL with an airspeed around 110 KTS on a ferry flgith from mit to ajo. Over the city of Azusa,CA the pilot… - [Accident 20110313005459A](https://openairdocs.org/incident/20110313005459A), Mar 13, 2011: Sikorsky S-58ET (N33602), El Segundo, CA, Destroyed. On March 13, 2011, at approximately 09:31, a Sikorsky S-58 helicopter, N33602, owned by heli flite, inc. and operated by aris helicopters, a 14CFR133 operator… - [Accident 20030712017769A](https://openairdocs.org/incident/20030712017769A), Jul 12, 2003: Skrsky S58ET (N15AH), Ranchopalosverd, CA, Destroyed. (-23) On July 12, 2003 N15AH as involved in 14 CFR part 133 operations at miralest intermediate school removing air conditioning units from the roofs of the… - [Accident 20020710019959A](https://openairdocs.org/incident/20020710019959A), Jul 10, 2002: Skrsky S58ET (N580US), Brookville, IN, Destroyed, 1 fatal. (.19) On July 10, 2002, about 1615 eastern standard time, a sikorski S-58ET helicopter, N580US, piloted by a commercial pilot, was substantially damaged when… - [Accident 19940128001069A](https://openairdocs.org/incident/19940128001069A), Jan 28, 1994: Skrsky S58ET (N4995G), San Jose, CA, Destroyed, 1 fatal. External load helicopters engine spooled down rotors decayed. Crashed on building roof. Apparently out of fuel. - [Accident 19890414007979A](https://openairdocs.org/incident/19890414007979A), Apr 14, 1989: Skrsky S58ET (N1168U), Santa Ana, CA, Substantial damage. Taxied over a ramp depression, helicopter entered ground resonance, left gear broke due corrosion and overload. - [Accident 19850420020599A](https://openairdocs.org/incident/19850420020599A), Apr 20, 1985: Skrsky S58ET (N65526), Gulf Of Mexico, FL, Destroyed, 1 fatal. Impacted water with one engine shut down due to fuel pump drive failure. Sheared bolts on swashplate assembly. - [Incident 19830623037639I](https://openairdocs.org/incident/19830623037639I), Jun 23, 1983: Skrsky S58ET (N39175), Willowbrook, IL, Substantial damage. Entered ground resonance on engine and rotor test. Unable to lift off due to power limited for test. Collapsed gear - [Incident 19801014084349I](https://openairdocs.org/incident/19801014084349I), Oct 14, 1980: Skrsky S58E (N4389S), Santa Catalina, CA. Attempted single engine ferry after permit had been denied. Lost RPM, landed in ocean. Flotation gear worked ok. - [Incident 19800929089449I](https://openairdocs.org/incident/19800929089449I), Sep 29, 1980: Skrsky S58ET (N4389S), Catalina Island, CA. No hover landing made when one engine failed. Pieces of turbine blades found in exhaust area. - [Incident 19800609054719I](https://openairdocs.org/incident/19800609054719I), Jun 9, 1980: Skrsky S58ET (N4389S), Long Beach, CA. Instructor pilot simulated governor failure, then shut engine down when flame came from exhaust. - [Accident 19781001043809A](https://openairdocs.org/incident/19781001043809A), Oct 1, 1978: Skrsky S58E (N47783), Steamboat Spgs, CO, Destroyed, 1 fatal. Mineral exploration. Horizontal hinge pin failed. Blade separated. ## Service difficulty reports (21) As reported by operators and repair stations, by the model named in the report. - [SDR CA031110007](https://openairdocs.org/sdr/CA031110007), Sep 1, 2003: BLADE. BROKEN. (CAN) THE AIRCRAFT WAS ENGAGED IN FIRE FIGHTING DUTIES WHEN ENGINE VIBRATION WAS FELT. ALL AIRCRAFT SYSTEMS WERE IN NORMAL, OPERATIONAL AND PERFORMANCE LIMITS. - [SDR CA031110006](https://openairdocs.org/sdr/CA031110006), Aug 3, 2003: PISTON ROD. SEVERED. (CAN) ON AIRCRAFT APPROACH FOR LANDING, AIRFRAME VIBRATION WAS FELT. UPON LANDING AIRCRAFT WAS GROUND ROCKING. REDUCTION OF ENGINE THROTTLES INCREASED GROUND RO - [SDR CA000128011](https://openairdocs.org/sdr/CA000128011), Jan 7, 2000: HINGE. CRACKED. (CAN) SMALL CRACK FOUND ON UPPER LT PYLON HINGE ATTACHMENT. NO OBVIOUS CAUSE. - [SDR AU000128011](https://openairdocs.org/sdr/AU000128011), Jan 7, 2000: HINGE. CRACKED. (AU) SMALL CRACK FOUND ON UPPER LT PYLON HINGE ATTACHMENT. NO OBVIOUS CAUSE. - [SDR CA990817020](https://openairdocs.org/sdr/CA990817020), Aug 9, 1999: HUB. CRACKED. (CAN) T/R HUB WAS REMOVED AND DISASSEMBLED IN ORDER TO COMPLY WITH SB. DURING OVERHAUL, AN NDT INSPECTION REVEALED A CRACK IN THE RADIUS OF THE MOUNTING FLANGE - [SDR 98ZZZX2585](https://openairdocs.org/sdr/98ZZZX2585), Jun 16, 1998: OIL PUMP. JAMMED. LOW OIL PRESSURE LIGHT ILLUMINATED IN FLIGHT. A PRECAUTIONARY LANDING WAS MADE. ON SITE INSPECTION DETERMINED THAT A PIECE OF COTTER PIN HAD BROKEN OFF AND WAS - [SDR CA971222001](https://openairdocs.org/sdr/CA971222001), Nov 5, 1997: FITTNG. BROKEN. (CAN) AIRCRAFT ON LOGGING MISSION, AFTER LAST FLIGHT AME FOUND THAT THE LUG OF THE PYLON FITTING HAD BROKEN OFF. - [SDR CA971125003](https://openairdocs.org/sdr/CA971125003), Oct 21, 1997: BLADE. DEBONDING. (CAN) DEBONDING OF POCKET FROM MAIN ROTOR BLADE. A SECTION 8 INCHES BY 8 INCHES CAME OFF. - [SDR NYBA9713](https://openairdocs.org/sdr/NYBA9713), Mar 18, 1997: BLADE. DEFECTIVE. RED BIM INDICATION REPLACED MAIN ROTOR BLADE - [SDR NYBA9712](https://openairdocs.org/sdr/NYBA9712), Mar 18, 1997: RING GEAR. MAKING METAL. GEARBOX RING GEAR CAUSING METAL GENERATION. REPLACED - [SDR CA960826102](https://openairdocs.org/sdr/CA960826102), Aug 14, 1996: BOLT. CRACKED. (CAN) WHILE COMPLYING WITH AD 95-26-08, MPI INSPECTION OF THE MAIN ROTOR SHAFT, THESE BOLTS WERE ALSO MPI'D REVEALING CRACKS UNDER THE HEAD IN 4 OUT OF 5 BOLTS. - [SDR 96ZZZX4781](https://openairdocs.org/sdr/96ZZZX4781), Aug 7, 1996: ENGINE. STALLS. DURING HIGH POWER DEMANDS, COMPRESSOR STALLS NOTED BY PILOT. DURING ACCELERATION CHECKS ON GROUND, MECHANIC NOTED COMPRESSOR STALLS. NYH BELIEVES THE COMPRESSOR - [SDR CA960826105](https://openairdocs.org/sdr/CA960826105), Jul 3, 1996: TRANSMISSION. MAKING METAL. (CAN) MAIN GEARBOX REMOVED DUE TO METAL FOUND IN OIL FILTER - [SDR 96ZZZX2195](https://openairdocs.org/sdr/96ZZZX2195), Apr 2, 1996: BLADE. LEAKAGE. DURING A 3-HOUR BIM CHECK, PILOT NOTED A RED BIM INDICATION. DURING A PRELIMINARY INSPECTION, LEAKAGE HAS BEEN NOTED TO BE EMANATING FROM THE SEAM BETWEEN POCKE - [SDR 95ZZZX7056](https://openairdocs.org/sdr/95ZZZX7056), Dec 3, 1995: DRIVE ASSY. DEBONDED. DURING A DAILY INSPECTION, A MECHANIC NOTICED THE BEARING SLEEVE WAS SHOWING SIGNS OF DEBONDING FROM THE SHAFT. NO OTHER DEFECTS WERE NOTED WITH THE SHAFT. REMO - [SDR 95ZZZX6201](https://openairdocs.org/sdr/95ZZZX6201), Oct 15, 1995: COUPLING. DEFECTIVE. DURING A SAFETY INSPECTION, A MECHANIC NOTED NUMEROUS RUBBER SEGMENTS (CHUNKS) MISSING FROM EVERY OTHER SEGMENT ON THIS NEW FAA/PMA PART. THIS COUPLING WAS IN T - [SDR 95ZZZX6202](https://openairdocs.org/sdr/95ZZZX6202), Oct 12, 1995: COUPLING. DEBONDED. DURING A 1,750 HOUR INSPECTION, THE MECHANIC NOTED THAT EVERY DOUBLE SEGMENT, THE RUBBER WAS DEBONDED BEYOND LIMITS IAW S-58T MMS. THIS COUPLING WAS IN THE NR 5 - [SDR 95ZZZX5463](https://openairdocs.org/sdr/95ZZZX5463), Sep 1, 1995: TOP CASE. CRACKED. MAIN GEARBOX TOP CASE CRACKED AT FORWARD SUPPORT TUBE ATTACHMENT POINT. REPLACED MAIN GEARBOX TOP CASE PN S1635-20211 WITH NEW. - [SDR 95ZZZX2331](https://openairdocs.org/sdr/95ZZZX2331), Apr 7, 1995: COUPLING. SEPARATION. DURING 1750-HOUR INSPECTION, MECHANIC NOTED NUMEROUS RUBBER SEGMENTS FOUND SEPARATED BEYOND LIMITS IAW WITH S-58T MM. REPLACED FLEX COUPLING IAW S-58T MM. - [SDR 95ZZZX2330](https://openairdocs.org/sdr/95ZZZX2330), Apr 7, 1995: COUPLING. SEPARATION. DURING 1750-HOUR INSPECTION, MECHANIC NOTED NUMEROUS RUBBER SEGMENTS WERE FOUND SEPARATED BEYOND LIMITS IAW S-58T MM. REPLACED FLEX COUPLING IAW WITH S-58T MM. - [SDR 95ZZZX2083](https://openairdocs.org/sdr/95ZZZX2083), Mar 27, 1995: GEARBOX MOUNT. LUG MISSING. WHILE REPLACING THE INTERMEDIATE GEARBOX FOR A SCHEDULED OVERHAUL, NOTED GEARBOX AIRFRAME MOUNT MISSING A BOLT LUG EAR. NO APPARENT CAUSE CAN BE ATTRIBUTED TO T ## STCs that may be installed (OpenAirDocs) (31) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SR04549AT](https://openairdocs.org/stc/SR04549AT): Conversion of the Pratt & Whitney PT6T-3 to the PT6T-3B configuration. Centerpointe Aerospace - [STC SA5783NM](https://openairdocs.org/stc/SA5783NM): Fabrication of Onboard Systems Model 7 CROPHAWK spray flow measuring system. Onboard Systems International - [STC SH5780NM](https://openairdocs.org/stc/SH5780NM): Fabrication of Onboard Systems model E-46 cargo hook load weigh system. Onboard Systems International - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR04483CH](https://openairdocs.org/stc/SR04483CH): Installation of NASI NREM18M Air Conditioning Module. National Aircraft Service Inc. (NASI) - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SH464NE](https://openairdocs.org/stc/SH464NE): Installation of an Alternate Float Bottle System. California Helicopter Parts Inc - [STC SH513NE](https://openairdocs.org/stc/SH513NE): Replacement of auxiliary fuel boost pumps with Parker Hannifin-Airborne inline auxiliary fuel booster pump. California Helicopter Parts Inc - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SR03310CH](https://openairdocs.org/stc/SR03310CH): Installation of NASI Air Conditioning Module. National Aircraft Service Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SR00968CH](https://openairdocs.org/stc/SR00968CH): Reduce take-off gross weight from 13,000 to 12,500 lbs. During passenger and internal cargo carrying operations. (S-58ET s/n 58-855). Midwest Truxton International, Inc - [STC SR00042SE](https://openairdocs.org/stc/SR00042SE): Modification to allow the use of Configuration II aircraft performance limits. Glacier Helicopter Inc - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SH2212NM](https://openairdocs.org/stc/SH2212NM): Installation of Silver Instruments Fueltron IIIPT-IGS, IIIPT-IPS, IIIPT-ILS, IIIPT-IKS digital fuel flow indicating system. Arnav Systems Inc - [STC SH770NW](https://openairdocs.org/stc/SH770NW): Installation of a weighing system. Onboard Systems - [STC SH4570NM](https://openairdocs.org/stc/SH4570NM): Approval for takeoffs and landings up to and including 12,000 feet density altitude is authorized. Air One Helicopters, Inc - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SH4539NM](https://openairdocs.org/stc/SH4539NM): Establish a nine passenger seat configuration. Air One Helicopters, Inc - [STC SH1010GL](https://openairdocs.org/stc/SH1010GL): Reduction of standard passenger seating from sixteen to nine seats or less. Brainerd Helicopters, Inc - [STC SH4507NM](https://openairdocs.org/stc/SH4507NM): Approval for takeoffs and landings up to and including 12,000 feet densiy altitude is authorized. Los Angeles County Sheriff's Department Aero Bureau - [STC SA513NE](https://openairdocs.org/stc/SA513NE): Replacement of auxiliary fuel boost pumps with Parker-Hannifin-Airborne in-line auxiliary fuel booster pumps. California Helicopter International - [STC SH4477NM](https://openairdocs.org/stc/SH4477NM): Installation of FC/FT-10 digital fuel flow indicating system. Arnav Systems, Inc - [STC SH1215GL](https://openairdocs.org/stc/SH1215GL): Reduction of standard passenger seating from sixteen to nine seats or less. Midwest Truxton International, Inc - [STC SH142WE](https://openairdocs.org/stc/SH142WE): Installation of electronic weighing system c-40. Onboard Systems - [STC SH2572NM](https://openairdocs.org/stc/SH2572NM): Increased takeoff and landing density altitude limit. North American Heli Svc Inc - [STC SH453NW](https://openairdocs.org/stc/SH453NW): Installation of an electronic weighing system (for monitoring cargo weight). Measurement Systems Intl - [STC SH1194EA](https://openairdocs.org/stc/SH1194EA): Conversion from original 12 passenger configuration to a 9 passenger configuration. Carson Helicopters Inc - [STC SH268WE](https://openairdocs.org/stc/SH268WE): Installation of stainless steel fire shields around aluminum engine mount fittings (P/N S1620-61435) of HSS, HUS, H-34 military series helicopters. (S-58 SERIES Military versions HSS, HUS, H-34). TBM, Inc. Lists S-58 Series - [STC SA77GL](https://openairdocs.org/stc/SA77GL): Installation of Bendix weather radar RDR-1200. Chicago Heli Airways Inc - [STC SH3NE](https://openairdocs.org/stc/SH3NE): Norton AC3093K radome installation and Bendix RDR 110 radar system installation. Oxford Avionics, Inc ## PMA parts (OpenAirDocs) (73, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first. - [9520218AB](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191559161120250617112735.0001): Bolt, Wheel. Aero Brake & Spares Inc · PMA PQ0694SW · Replaces 9520218 · Jan 23, 2025 - [L8518329](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167875811320251223203903.0001): Thermostatic Oil By-Pass Relief Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 8518329 · Feb 23, 2023 - [L8538233](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137666353620251223203905.0001): Oil Cooler Assy. Honeywell International Inc. · PMA PQ1222NM · Replaces 8538233 · Feb 23, 2023 - [L8518329](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178194910820241017144603.0001): Thermostatic Oil By-Pass Relief Valve. Honeywell International US LLC · PMA PQ1354NM · Replaces 8518329 · Feb 21, 2023 - [L8538233](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID128150809520241017144606.0001): Oil Cooler Assy. Honeywell International US LLC · PMA PQ1354NM · Replaces 8538233 · Feb 21, 2023 - [IHP-S1610-26108](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101460178620220811183741.0001): Washer. IHP Worldwide Inc · PMA PQ05469NM · Replaces S1610-26108 · Jul 20, 2022 - [CHP-S1620-65222-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142799766320220830164905.0001): Track, LHCockpit CanopySliding Window. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1620-65222-2 · Jun 24, 2022 - [CHP-SB2501-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136225622220220830164903.0001): Inner Race. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces SB2501-1 · Jun 24, 2022 - [CHP-S1620-65222-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136184541620220830164904.0001): Track, LHCockpit CanopySliding Window. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1620-65222-1 · Jun 24, 2022 - [01-0790906-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155301104220220610124329.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 2022 - [NREM-DL30](https://drs.faa.gov/browse/excelExternalWindow/D219BC331D25B5B586258625004DF7FA.0001): Air Conditioning Module. National Aircraft Svc Inc · PMA PQ2369CE · Modification part · Nov 15, 2020 - [NREM-DL30](https://drs.faa.gov/browse/excelExternalWindow/2D7E2FD3C1328B8E86258624006B60B3.0001): Air Conditioning Module. National Aircraft Svc Inc · PMA PQ2369CE · Modification part · Nov 15, 2020 - [NOHIPOT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138670999720240320173404.0001): Decal. Augusta Aero Innovations LLC · PMA PQ04441CE · Replaces 06-201020 · Oct 6, 2020 - [CHP-S1610-24012-041](https://drs.faa.gov/browse/excelExternalWindow/823633A201E8DB1D8625859F003841FD.0001): Star Assembly. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-24012-041 · Apr 29, 2020 - [CHP S1610-23196-2](https://drs.faa.gov/browse/excelExternalWindow/7523192A180AAF3A8625859F0038409A.0001): Bracket. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-23196 -2 · Apr 29, 2020 - [CHP-S1610-26090](https://drs.faa.gov/browse/excelExternalWindow/713DD67B6F5B43438625859F00384235.0001): Pin Assy. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-26090 · Apr 29, 2020 - [CHP 58350-10029-046](https://drs.faa.gov/browse/excelExternalWindow/70827BA167DB17538625859F00384062.0001): Pulley Assembly. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces 58350-10029-046 · Apr 29, 2020 - [CHP-S1610-23020-004](https://drs.faa.gov/browse/excelExternalWindow/6D21E2D6BD3BDF1D8625859F003841C2.0001): Horizontal Hinge Pin. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-23020-004 · Apr 29, 2020 - [CHP 58350-10030-105](https://drs.faa.gov/browse/excelExternalWindow/6B1A34DD22BF74E08625859F003840D1.0001): Shaft. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces 58350-10030 -105 · Apr 29, 2020 - [CHP-S1610-26107](https://drs.faa.gov/browse/excelExternalWindow/5F4B1014216819C38625859F00384183.0001): Spacer. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-26107 · Apr 29, 2020 - [CHP 58070-10002-106](https://drs.faa.gov/browse/excelExternalWindow/5A32D0C8B1D46C708625859F00384141.0001): Eye Bolt. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces 58070-10002-106 · Apr 29, 2020 - [CHP-S1610-26111](https://drs.faa.gov/browse/excelExternalWindow/02B7470BE7DB9D888625859F00384109.0001): Trunnion Assy.. Centerpointe Aerospace Inc · PMA PQ03894SW · Replaces S1610-26111 · Apr 29, 2020 - [MCG-1900](https://drs.faa.gov/browse/excelExternalWindow/C5FE45C228B3339F86258474006122F8.0001): Dampener Hub. Miraj Corporation · PMA PQ0870NE · Replaces 23032-1900 · Feb 24, 2019 - [M23046-1180](https://drs.faa.gov/browse/excelExternalWindow/ACB1BFB463396FCB862582F90062FBCC.0001): Screen. Miraj Corporation · PMA PQ0870NE · Replaces 23046-1180 · Jul 4, 2018 - [M23046-2322](https://drs.faa.gov/browse/excelExternalWindow/440DAF1B5906A487862582F90062FBBE.0001): End Bell. Miraj Corporation · PMA PQ0870NE · Replaces 23046-2322 · Jul 4, 2018 - [M23046-1678](https://drs.faa.gov/browse/excelExternalWindow/2C87651EA7D73C2B862582F90062FBB7.0001): Bearing Support Assembly. Miraj Corporation · PMA PQ0870NE · Replaces 23046-1678 23048-1470 23046-1670 · Jul 4, 2018 - [M23032-2710](https://drs.faa.gov/browse/excelExternalWindow/98EF27A0292FF3CE862582CF006DC090.0001): Dampener Plate. Miraj Corporation · PMA PQ0870NE · Replaces 23032-2710 · Jun 17, 2018 - [87-05208-001](https://drs.faa.gov/browse/excelExternalWindow/C4B8A8A2B2422B728625822E007853B6.0001): Assembly, Light, PAR 46 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0790750-20 · Jan 23, 2018 - [30300-1285WE](https://drs.faa.gov/browse/excelExternalWindow/4A31CDE150546002862582280078878D.0001): Brush. Wencor LLC · PMA PQ1370NM · Replaces 30300-1285 · Nov 19, 2017 - [87-05207-002](https://drs.faa.gov/browse/excelExternalWindow/4BE4BA39295AB01E862581760058C64D.0001): Assembly, Light, PAR 36 Taxi. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-25 · Aug 1, 2017 - [87-05207-001](https://drs.faa.gov/browse/excelExternalWindow/4ACD6BDF5990D9C7862581760058C571.0001): Assembly, Light, PAR 36 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-20 · Aug 1, 2017 - [M05-374094](https://drs.faa.gov/browse/excelExternalWindow/04A248CF6B40096C862580E40064D09B.0001): Washer, Non Metallic. Miraj Corporation · PMA PQ0870NE · Replaces Safran/Goodrich 05-374094 · Mar 6, 2017 - [01-0790750-20](https://drs.faa.gov/browse/excelExternalWindow/DF585F07385239BF86257F000060B609.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [01-0771833-20](https://drs.faa.gov/browse/excelExternalWindow/B3ED2FAAA3DCF33C86257F000060B51A.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [01-0790750-10](https://drs.faa.gov/browse/excelExternalWindow/9D6AFCBD1348AD6186257F000060B5B8.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [01-0771833-15](https://drs.faa.gov/browse/excelExternalWindow/687551E9968AF90886257F000060B4C0.0001): LED Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [01-0771833-25](https://drs.faa.gov/browse/excelExternalWindow/368AB879B374E71086257F000060B56A.0001): LED Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [01-0771833-10](https://drs.faa.gov/browse/excelExternalWindow/0973C66BC006449A86257F000060B467.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015 - [M2004-1](https://drs.faa.gov/browse/excelExternalWindow/3F70341BC2D2DF6886257D9A006B2BC2.0001): Brush, Electrical Contact. Miraj Corporation · PMA PQ0870NE · Replaces 23093-1300, 30300-1282, 30300-1285… · Nov 23, 2014 - [NTEK-DL25](https://drs.faa.gov/browse/excelExternalWindow/8B010823A658A19E86257CCC00629A18.0001): Air Conditioning Module. National Aircraft Service Inc · PMA PQ2369CE · Modification part · Apr 24, 2014 - [M23088-1320](https://drs.faa.gov/browse/excelExternalWindow/5636B7D3E810E05C86257C2B006EC8FE.0001): Brush, Electrical Contact. Miraj Corporation · PMA PQ0870NE · Replaces 23093-1300, 30300-1282, 30300-1285… · Nov 21, 2013 - [M23032-1910](https://drs.faa.gov/browse/excelExternalWindow/B96F1DFD4F4D8AF286257B7C0054FB79.0001): Dampener Plate. Miraj Corporation · PMA PQ0870NE · Replaces 23032-1910 · May 28, 2013 - [M23093-1300](https://drs.faa.gov/browse/excelExternalWindow/A5D25C62E4D97FFF86257EC70063961B.0001): Brush, Electrical Contact. Miraj Corporation · PMA PQ0870NE · Replaces 23093-1300, 30300-1282, 30300-1285… · Jan 21, 2013 - [01-0771424-25](https://drs.faa.gov/browse/excelExternalWindow/DFC8C9A036093F40862579EC00539710.0001): LED PAR36 Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-25 · Apr 10, 2012 - [01-0771424-20](https://drs.faa.gov/browse/excelExternalWindow/BD84CA0936FC287C862579EC0053969B.0001): LED PAR36 Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-20 · Apr 10, 2012 - [01-0771424-10](https://drs.faa.gov/browse/excelExternalWindow/3A8EEF8AE12997AF862579EC0053960D.0001): LED PAR36 Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-10 · Apr 10, 2012 - [01-0771424-15](https://drs.faa.gov/browse/excelExternalWindow/2788755BBBD7B122862579EC00539658.0001): LED PAR36 Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-15 · Apr 10, 2012 - [EH30300-1285](https://drs.faa.gov/browse/excelExternalWindow/E65225125F927CD2862581A100771B36.0001): Brush. Seginus Inc · PMA PQ4083CE · Replaces Goodrich Power Systems P/N 30300-1285 · Dec 19, 2011 - [EH30300-1285](https://drs.faa.gov/browse/excelExternalWindow/1392CCD06DBF6E068625797300520760.0001): Brush. Seginus Inc · PMA PQ4083CE · Replaces Goodrich Power Systems P/N 30300-1285 · Dec 19, 2011 - [EH30300-1285](https://drs.faa.gov/browse/excelExternalWindow/9AA501FFC219AE6E862578720061EF75.0001): Brush. Seginus Inc · PMA PQ4083CE · Replaces Goodrich Power Systems P/N 30300-1285 · Apr 12, 2011 All of them: https://openairdocs.org/model/sikorsky-s-58et/pma.md --- 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.