# TCDS H2EA: Sikorsky Aircraft Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Sikorsky Aircraft Corporation
- Revision: 4
- Revised: December 7, 2012
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 91
- Registered aircraft: 6, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/83/07/830788cc9c1a576010123e930f33fb45aafd8d9d719b435eb6c3257deeaba0da
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C3755E1A96862EB786257AEE0076F2FC.0001
- Page: https://openairdocs.org/tcds/H2EA

## Models (4)

As the data sheet lists them.

- S-61A ((U.S. Navy SH-3A, HSS-2, USAF CH-3B))
- S-61D ((U.S. Navy SH-3D))
- S-61V ((U.S. Navy VH-3A, HSS-22))
- S-61E ((U.S. Navy RH-3A))

## What the data sheet says

From the PDF's text layer, line by line; tables lose their columns. The PDF is the record.

```text
Page No. 1 2 3 4 5 6 
Rev. No. 4 4 4 4 3 3  
 
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
 
H2EA 
Revision 4 
 
SIKORSKY 
S-61A (U.S. Navy SH-3A, HSS-2) 
(USAF CH-3B) 
S-61D  (U.S. Navy SH-3D) 
S-61E  (U.S. Navy RH-3A) 
S-61V  (U.S. Navy VH-3A, HSS-22) 
 
December 7, 2012 
 
 
TYPE CERTIFICATE DATA SHEET NO.  H2EA 
 
This data sheet which is a part of type certificate No.  H2EA prescribes conditions and limitations under which the product for  
which the type certificate was issued meets the airworthiness requirements of the Federal Aviation Regulations. 
 
Type Certificate Holder Sikorsky Aircraft Corporation 
  6900 Main Street 
  Stratford, Connecticut  06615-9129 
 
I - Model S-61A (Restricted Category), approved April 13, 1967. 
 
 Engine 2 General Electric T 58-GE-8B (for SH-3A and HSS-2) 
  2 General Electric T58-GE-1  (for CH-3B) 
 
 Fuel Aviation Kerosene JP4 or JP5 (General Electric Co. Spec. No. D50TF2 or subsequent  
  revisions thereto.) 
 
 Engine limits 
    Shaft Power Gas Power Turbine 
    H P  T u r b i n e  R . P . M .  Gen. R.P.M. Inlet (T5)  
  Military Power 1250 21275 26300 677°C (1250°F) 
   (30 min.) 
  Normal Cont. 1050 21275 26300 635°C (1175°F) 
   Cruise 
 
 Rotor Limits Maximum 238 r.p.m. (117%) 
  Minimum 184 r.p.m. (91%) 
 
 Airspeed limits Never exceed 144 knots IAS 
 
 C.G. range 258.0 to 276.0 
 
 Maximum weight 19,100 lb. 
 
 Maximum Crew 2 (pilot, co-pilot) 
 
 Fuel capacity 698 gal. (345 gal. fwd. tank, 353 gal. aft tank for Models SH-3A and HSS-2)  1,141 gal.   
  (347 gal. fwd. tank, 353 gal. aft ta nk, 441 gal. auxiliary tank for CH-3B) 
 
 Oil capacity 6 gal.  (two tanks, 3 gal. each)

H2EA Page 2 of 6 
I - Model S-61A (Restricted Category), approved April 13, 1967. (Cont'd) 
 
 Other operating Models SH-3A and HSS-2:  Naval Air Training and Operating Procedures 
 limitations Standardization ( NATOPS) Flight Manual, Navy Model SH-3A Helicopters, NAVAIR  
  01-230HLC-1, dated 15 September 1966.  Mode l CH- 3B:  USAF Flight Manual, USAF  
  Series CH-3B Helicopter, T.O. 1H- 3(C)B-1, dated 30 August 1966. 
 
 Serial Nos. eligible See latest revi sion of FAA-approved Sikorsky Report SER-611975 
 
II - Model S-61D (Restricted Category), approved April 13, 1967. 
 
 Engine 2 General Electric T58-GE-10 
 
 Fuel Aviation Kerosene JP4 or JP5 (General Electric Co. Spec. No. D50TF2 or subsequent  
  revisions thereto.) 
 
 Engine limits 
    Shaft Power Gas Power Turbine 
    H P  T u r b i n e  R . P . M .  Gen. R.P.M. Inlet (T5)  
  Military Power 1400 21275 26300 696°C (1285°F) 
   (30 min.) 
  Normal Cont. 1250 21275 26300 660°C (1220°F) 
   Cruise 
 
 Rotor Limits Maximum 238 r.p.m. (117%) 
  Minimum 184 r.p.m. (91%) 
 
 Airspeed limits Never exceed 144 knots IAS 
 
 C.G. range 258.0 to 276.0 
 
 Maximum weight 19,100 lb. 
 
 Minimum Crew 2 (pilot, co-pilot) 
 
 Fuel capacity 848 gal.  (347 gal. fwd. ta nk, 148 gal. center tank, 353 gal. aft tank) 
 
 Oil capacity 6 gal.  (two tanks, 3 gal. each) 
 
 Other operating Naval Air Traini ng and Operating Procedures Standardization (NATOPS) Flight  
 limitations Manual, Navy Model SH-3D Helicopt ers, NAVAIR 01-230-HLE-1, dated 15 September  
  1966 
 
 Serial Nos. eligible See latest revi sion of FAA-approved Sikorsky Report SER-611975 
 
III - Model S-61E (Restricted Category), approved April 13, 1967. 
 
 Engine 2 General Electric T58-GE-8B 
 
 Fuel Aviation Kerosene JP4 or JP5 (General Electric Co. Spec. No. D50TF2 or subsequent  
  revisions thereto.)

Page 3 of 6 H2EA 
III - Model S-61E (Restricted Category), approved April 13, 1967. (Cont'd) 
 Engine limits 
    Shaft Power Gas Power Turbine 
    H P  T u r b i n e  R . P . M .  Gen. R.P.M. Inlet (T5)  
  Military Power 1250 21275 26300 677°C (1250°F) 
   (30 min.) 
  Normal Cont. 1050 21275 26300 635°C (1175°F) 
   Cruise 
 
 Rotor Limits Maximum 238 r.p.m. (117%) 
  Minimum 184 r.p.m. (91%) 
 
 Airspeed limits Never exceed 144 knots IAS 
 
 C.G. range 258.0 to 276.0 
 
 Maximum weight 19,100 lb. 
 
 Minimum Crew 2 (pilot, co-pilot) 
 
 Fuel capacity 852 gal.  (345 gal. fwd. tank,  353 gal. aft tank, 154 gal. auxiliary tank) 
 
 Oil capacity 8.6 gal.  (two tanks, 3 gal.  each plus one auxiliary tank, 2.6 gal.) 
 
 Other operating Naval Air Traini ng and Operating Procedures Standardization (NATOPS) Flight  
 limitations Manual, Navy Model RH-3A Helicopt ers, NAVAIR 01-230-HLCA-1, dated 1 November  
  1966 
 
 Serial Nos. eligible See latest revi sion of FAA-approved Sikorsky Report SER-611975 
 
IV - Model S-61V (Restricted Category), approved April 13, 1967. 
 
 Engine 2 General Electric T58-GE-8C 
 
 Fuel Aviation Kerosene JP4 or JP5 (General Electric Co. Spec. No. D50TF2 or subsequent  
  revisions thereto.) 
 
 Engine limits 
    Shaft Power Gas Power Turbine 
    H P  T u r b i n e  R . P . M .  Gen. R.P.M. Inlet (T5)  
  Military Power 1250 21275 26300 677°C (1250°F) 
   (30 min.) 
  Normal Cont. 1050 21275 26300 635°C (1175°F) 
   Cruise 
 
 Rotor Limits Maximum 238 r.p.m. (117%) 
  Minimum 184 r.p.m. (91%) 
 
 Airspeed limits Never exceed 144 knots IAS 
 
 C.G. range 258.0 to 276.0 
 
 Maximum weight 19,100 lb. 
 
 Maximum Crew 2 (pilot, co-pilot) 
 
 Fuel capacity 698 gal.  (345 gal. fwd. tank, 353 gal. aft tank) 
 
 Oil capacity 6 gal.  (two tanks, 3 gal. each)

H2EA Page 4 of 6 
IV - Model S-61V (Restricted Category), approved April 13, 1967. (Cont'd) 
 Other operating Supplemental Handbook of  Operation, Maintenance, and Repair Instructions with Parts  
 limitations Breakdown, Navy Models VH-3A and SH-3A (BuNos 147145 and 148037) Helicopters,  
  NAVAIR 01-230HLY-23, dated 15 January 1967 and Naval Air Training and Operating  
  Procedures Standardization (NATOPS) Fli ght Manual, Navy Model SH-3A Helicopters,  
  NAVAIR 01-230-HLC-1, dated 15 September 1966 
 
 Serial Nos. eligible See latest revi sion of FAA-approved Sikorsky Report SER-611975  
 
Data Pertinent to All Models 
 
 Datum 267.4 inches forward of the main rotor centroid 
 
 Certification Basis FAR 21.25 (a ) 2 effective February 1, 1965 
  Type Certificate No.  H2EA issued April 13, 1967, for the special purpose of  
  transportation of cargo in the furtherance of the operator's or lessee's business only. 
  Date of Application for Type Certificate: February 27, 1967. 
 
 Production Basis None.  No helicopters may be produced under this approval. 
 
 Equipment Equipment necessary for the particular  special purpose operation must be installed (See  
  NOTE 3). 
 
NOTE 1. Current weight and balance report including a list of  equipment included in the certificated empty weight,  
 and loading instructions when necessary, must be in each helicopter at the time of original airworthiness  
 certification and all times thereafter. Refer to  Handbook of Weight and Balance NAVAIR 01-1B-40 for  
 Models S-61D and S-61E and to Handbook of Weight  and Balance NAVAIR 01-1B-50 for Models S-61A  
 and S-61V. 
 
NOTE 2. These helicopters must be serviced and maintained  in compliance with Periodic Maintenance Requirements  
 Manual NAVWEPS 01-230HLC-6 and with the following handbooks:  Model S-61A: Handbook of  
 Maintenance Instructions NAVAIR 01-230HLC-2;  Mode l S-61D:  Handbook of Maintenance Instructions  
 01-230HLE-2;  Model S-61E:  Handbook of Maintenan ce Instructions 01-230HLCA-2;  Model S-61V:   
 Handbook of Maintenance Instructions 01-230HLC -2 and Supplemental Handbook of Operation,  
 Maintenance, and Repair Instructions  with Parts Breakdown NAVAIR 01-230HLY-23. 
 
NOTE 3. Modifications to these rotorcra ft or special equipment will be necessary, reference FAR 21.25(a)(2), prior  
 to civil airworthiness certification for th e special purpose of transportation of cargo. 
 
NOTE 4. See latest revision of F AA-approved Sikorsky Report SER-611975 for S-61A serial number eligibility 
information. 
 
NOTE 5. Prior to the civil airworthiness certification, co mpliance with the latest revision of FAA-approved Sikorsky 
Report SER-611974 must be accomplished.

Page 5 of 6 H2EA 
NOTE 6. Service life limited parts must be retir ed in accordance with the following schedule: 
 
    Part No. Service Life (Hours ) 
 
  Main Rotor Blades S6115-20101 2000 
  Tail Rotor Blades S6115-30001 3000 
    S6115-30001-1 3000 
  Tail Rotor Hub S6110-33003 2200 
  Tail Rotor Spindle S6110-33006 850 
  Primary Servo Trunnion 
   Assembly S6165-20232 7700 
  Swashplate Guide S6135-20553-1 5200 
  Main Transmission S6135-20011-1 3600 
   Upper Housing S6135-20011-6 3600 
  Primary Servo Housing 
   Assembly S6165-20202 8100 
  Rotary Wing Head Damper S6110-26019-0 3400 
   Piston Rod Assembly S6110-26019-1 3400 
 
NOTE 7. The following placard must be prominently disp layed in the cockpit in full view of the pilots: 
 "This rotorcraft must be operated in accordance with  the restricted category operating limitations of FAR  
 91.39." 
 
NOTE 8. Certain serial number airc raft listed in Sikorsky Report SER-611975 are also eligible with the  
 accomplishment of certain applicable fuselage modifications (NOTE 5) and installation of  
 optional engines listed below. 
 
 Optional engines eligible for installation and the applicable limitations:  (See NOTE 12) 
 
 Engines (2): (a) General Electric CT58-140-1 (w ith Hamilton Standard Fuel Control JFC-26). 
 
  Engines Limits:  Sea Level Static - Standard Day 
 
    Shaft Power Gas Power Turbine 
    H P  T u r b i n e  R . P . M .  Gen. R.P.M. Inlet (T5)  
  Takeoff (5 min.) 1400 21275 (112%Nf) 26300(100%Ng) 1285°F(696°C) 
  One Engine Inoperative 1400 21275 (112%Nf) 26300(100%Ng) 1285°F(696°C) 
   (30 min.) (See NOTE 11) 
  One Engine Inoperative 1500 21275 (112%Nf) 26800(102%Ng) 1330°F(721°C) 
   (2 1/2 min.) 
  Maximum Continuous 1250 21275 (112%Nf) 26300(100%Ng) 1220°F(660°C) 
  Maximum Transient    1545°F(840°C) 
   (2 sec.) 
  Starting (2 sec.)    1740°F(950C) 
  Allowable Maximum 
   Overspeed (15 sec.)  23100(122%Nf) 27600(105%Ng) 
 
  Takeoff and Maximum continuous horsepower ratings are normally obtained at a power turbine speed  
  of 18,966 r.p.m. (100%Nf). 
 
  Total power for two engine operation is limited to  2,500 hp. for takeoff.  Maximum continuous total  
  power for two engine operation is limited to 2100 hp. 
 
  See NOTE 9 for variations of sea level static power limit below 59°F. 
 
  The use of engine Model CT58-140-1 is permitted only when: 
  a. Main gearbox part number S6135-20600-27, -3, or -39 is installed. 
  b. Left engine cowl inst., part number S6130-80140-3, is used. 
  c. Tail pipe assembly, part number S6130- 80169-1, is installed (bolt-on versus clamp). 
  d. Tube installation - air bleed dump R. H., part number S6120-62342-6, is installed. 
  e. Engine Inlet Duct Assy.  S6130-80179-2 is installed.

H2EA Page 6 of 6 
NOTE 9. Below 59°F the sea level sta tic power limits vary as follows: 
 
    CT58-140-1  
  2 1/2 Min. Helicopter Increases linearly from 
    1500 hp. at  59°F to 
    1545 hp. at -65°F. 
 
  Takeoff and 30 Min. Increases linearly from 
   Helicopter 1400 hp. at  59°F to 
    1510 hp. at  22°F and to 
    1540 hp. at -65°F. 
 
  Max. Continuous Increases linearly from 
    1250 hp. at 59°F to 
    1390 hp. at 39°F and 
    flat rated at 1390 hp. 
    at 39°F and below. 
 
NOTE 10. Tail rotor blade S6117-30101-041, -042, and -043 are not usable on these models. 
 
NOTE 11. If takeoff power is used in cumu lative excess of five minutes during any one emergency, the engine must be  
 inspected in accordance with G.E. Commercial E ngine Service Memorandum CT58-110-1, Maintenance  
 No.  19, April 17, 1962. 
 
NOTE 12. If any ratings on the CT58-140 series engines are ex ceeded refer to G.E. Engine Maintenance Manual No.   
 SEI-182, Revision 7, November 1979. 
 
 
...END...
```

## ADs (46, in force first)

- [AD 2026-15-17](https://openairdocs.org/ad/2026-15-17): Main Rotor Gearbox · Glacier Helicopter CH-3E, S-61A, S-61D and 12 more. Effective Sep 10, 2026
- [AD 2026-11-05](https://openairdocs.org/ad/2026-11-05): Rotorcraft flight control; Rotorcraft servo system · Carson Helicopters S-61L, SH-3H, CH-3E and 11 more. Effective Jul 9, 2026
- [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 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022
- [AD 2021-10-16](https://openairdocs.org/ad/2021-10-16): Engine/Transmission Coupling · Carson Helicopters S-61L, SH-3H, SH-3H and 6 more. Effective Jul 1, 2021
- [AD 2021-05-19](https://openairdocs.org/ad/2021-05-19): Tail Rotor Control System · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective May 7, 2021
- [AD 2013-05-17](https://openairdocs.org/ad/2013-05-17): Aircraft Fuel Filter/Strainer · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Apr 26, 2013
- [AD 2008-10-04](https://openairdocs.org/ad/2008-10-04): Chip detectors · Sikorsky S-61A, S-61D, S-61E and 1 more. Effective Jun 12, 2008
- [AD 2002-20-05](https://openairdocs.org/ad/2002-20-05): Rescue hoists · Agusta A109, A109A, A109A II and 31 more. Effective Nov 7, 2002
- [AD 2000-13-06](https://openairdocs.org/ad/2000-13-06): Web Fittings · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Jul 18, 2000
- [AD 98-26-02](https://openairdocs.org/ad/98-26-02): Shaft · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Jan 20, 1999
- [AD 97-19-06](https://openairdocs.org/ad/97-19-06): Blade Trailing Edge Pocket Assemblies · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Oct 6, 1997
- [AD 91-12-01](https://openairdocs.org/ad/91-12-01): Sleeve & Spindle Assemblies · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Jul 8, 1991
- [AD 90-01-04](https://openairdocs.org/ad/90-01-04): Main Rotor Hub Upper Plate · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Feb 5, 1990
- [AD 89-07-09](https://openairdocs.org/ad/89-07-09): Main Rotor Gearbox · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Apr 20, 1989
- [AD 85-18-05 R2](https://openairdocs.org/ad/85-18-05-R2): Main Rotor Blades · Sikorsky S-61A, S-61L, S-61N and 3 more. Effective Feb 8, 1989
- [AD 87-15-11](https://openairdocs.org/ad/87-15-11): Gearbox Brackets · Sikorsky S-61A, S-61L, S-61N and 3 more. Effective Aug 10, 1987
- [AD 86-23-08](https://openairdocs.org/ad/86-23-08): Main Rotor Hub Lower Plate · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Apr 21, 1987
- [AD 84-25-01](https://openairdocs.org/ad/84-25-01): Main Gearbox Inspection · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Jan 19, 1985
- [AD 84-11-03](https://openairdocs.org/ad/84-11-03): Possible Flange Failure · Sikorsky S-61A, S-61L and S-61N. Effective Jun 6, 1984
- [AD 84-01-51](https://openairdocs.org/ad/84-01-51): Rotary Wing Head Shaft Nut · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Mar 27, 1984
- [AD 74-20-07 R5](https://openairdocs.org/ad/74-20-07-R5): Main Rotor Blades · Sikorsky S-61A, S-61L, S-61N and 3 more. Effective Dec 30, 1983
- [AD 78-20-05 R4](https://openairdocs.org/ad/78-20-05-R4): Main Rotor Spindles · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective May 25, 1983
- [AD 76-08-01 R1](https://openairdocs.org/ad/76-08-01-R1): Tail Rotor Pylon · Sikorsky S-61A, S-61D, S-61E and 2 more. Effective Dec 29, 1980
- [AD 80-17-07](https://openairdocs.org/ad/80-17-07): Horizontal Hinge Pins · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Aug 15, 1980
- [AD 74-20-09](https://openairdocs.org/ad/74-20-09): Main Rotor Blades · Sikorsky S-61A, S-61L, S-61N and 2 more. Effective Feb 25, 1977
- [AD 68-19-07](https://openairdocs.org/ad/68-19-07): Rotor Blade Spindles · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Dec 23, 1975
- [AD 73-15-01](https://openairdocs.org/ad/73-15-01): Rear Fuselage and Pylon Fittings · Sikorsky S-61A, S-61D, S-61E and 2 more. Effective Jul 27, 1973
- [AD 72-25-04](https://openairdocs.org/ad/72-25-04): Loss of Main Rotor Control · Sikorsky S-61A, S-61D, S-61L and 3 more. Effective Dec 15, 1972
- [AD 72-16-06](https://openairdocs.org/ad/72-16-06): Electrical Feeder Wire Gage · Sikorsky S-61A, S-61L, S-61N and 1 more. Effective Aug 10, 1972
- [AD 72-03-01](https://openairdocs.org/ad/72-03-01): Alum. Forgings Flight Control System · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Feb 1, 1972
- [AD 71-21-03](https://openairdocs.org/ad/71-21-03): Link in Servo Valve Input Linkage · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Oct 7, 1971
- [AD 71-05-01](https://openairdocs.org/ad/71-05-01): Main Landing Gear Axle · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Feb 23, 1971
- [AD 68-20-08](https://openairdocs.org/ad/68-20-08): Functional Test of AFCS · Sikorsky S-61A, S-61L and S-61N. Effective Jan 14, 1971
- [AD 70-15-01](https://openairdocs.org/ad/70-15-01): Cabin Heater Blower · Sikorsky S-61A, S-61L, S-61N and 1 more. Effective Jul 22, 1970
- [AD 70-09-03](https://openairdocs.org/ad/70-09-03): Tail Gear Box Pitch Beams · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective May 8, 1970
- [AD 70-08-03](https://openairdocs.org/ad/70-08-03): Heater Inlet Check Valve · Sikorsky S-61A, S-61L, S-61N and 1 more. Effective Mar 17, 1970
- [AD 68-21-06](https://openairdocs.org/ad/68-21-06): Deactivate AFCS · Sikorsky S-61A, S-61L and S-61N. Effective Oct 24, 1968
- [AD 67-29-05](https://openairdocs.org/ad/67-29-05): Rotary Wing Hub Hinge Pins · Sikorsky S-61A, S-61D, S-61E and 5 more. Effective Oct 30, 1967
- [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 65-08-02](https://openairdocs.org/ad/65-08-02): Main Rotor Blades · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 11 more. Effective Apr 9, 1965
- [AD 78-12-05](https://openairdocs.org/ad/78-12-05): Fixed S-61L Type Landing Gears · Sikorsky S-61A, S-61L, S-61N and 1 more
- [AD 79-12-10](https://openairdocs.org/ad/79-12-10): Tail Rotor Blades · Sikorsky S-61A, S-61D, S-61E and 5 more
- [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
- [AD 2015-20-12](https://openairdocs.org/ad/2015-20-12) (historical): Main Rotor Gearbox · Carson Helicopters SH-3H, SH-3H, CH-3E and 13 more. Effective Nov 24, 2015
- [AD 97-10-04](https://openairdocs.org/ad/97-10-04) (historical): Blade Trailing Edge Pocket Assemblies · Sikorsky S-61A, S-61D, S-61E and 5 more

## Registered aircraft by registry model (OpenAirDocs)

- [Sikorsky S-61A](https://openairdocs.org/model/sikorsky-s-61a): 5 aircraft (registry code 814210C)
- [Carson Helicopters / Sikorsky S61A](https://openairdocs.org/model/carson-helicopters-sikorsky-s61a): 1 aircraft (registry code 814210N)
- [Sikorsky S-61D](https://openairdocs.org/model/sikorsky-s-61d): 0 aircraft (registry code 814210L)
- [Sikorsky S-61E](https://openairdocs.org/model/sikorsky-s-61e): 0 aircraft (registry code 8140710)
- [Sikorsky S-61V](https://openairdocs.org/model/sikorsky-s-61v): 0 aircraft (registry code 8142103)

## STCs approved under this data sheet (39)

- [STC SR00206NY](https://openairdocs.org/stc/SR00206NY): Installation of 11,000 pound capacity Cargo Sling. Carson Helicopters Inc.
- [STC SR01858SE](https://openairdocs.org/stc/SR01858SE): Manufacture of the Isolair, Inc., Eliminator II Model 4600-S61 Fire Fighting System. Isolair Inc.
- [STC SR00814SE](https://openairdocs.org/stc/SR00814SE): Fabrication of reinforcement kit - aft fuselage station 493. For model S61A, applies to S/N 61094. For model S61NM, applies to S/N 66454. Croman Corporation
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR01127SE](https://openairdocs.org/stc/SR01127SE): Modification of main rotor blade part number 61170-20201 in accordance with Master Drawing List RR 9633-08, Revision A, dated September 17, 2002, or later FAA approved revision.  Retirement life for the modified main rotor blade, part number RR-61170-20201 is 21,200 total time in service.. Park Technologies, LLC
- [STC SR01552SE](https://openairdocs.org/stc/SR01552SE): Fabrication and installation of an external aerial liquid dispensing tank. Carson Helicopters Inc
- [STC SR04483CH](https://openairdocs.org/stc/SR04483CH): Installation of NASI NREM18M Air Conditioning Module. National Aircraft Service Inc. (NASI)
- [STC SR02692SE](https://openairdocs.org/stc/SR02692SE): Installation of T58-GE-402 engines. Croman Corporation
- [STC SR01051DE](https://openairdocs.org/stc/SR01051DE): Installation of Croman Corporation Electric Heater. Croman Corporation
- [STC SH5654NM](https://openairdocs.org/stc/SH5654NM): Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints. Croman Corporation
- [STC SR04401NY](https://openairdocs.org/stc/SR04401NY): Increase of Out of Ground Effect (OGE) Hover Performance. Carson Helicopters Inc
- [STC SR04122NY](https://openairdocs.org/stc/SR04122NY): The Installation of Carson Helicopters, Inc. Composite Tail Rotor Blade and Pitch Sleeve, part number 428-600-1,. Carson Helicopters Inc
- [STC SR02671LA](https://openairdocs.org/stc/SR02671LA): Installation of a shorter composite blade. Carson Helicopters, Inc
- [STC SR02601SE](https://openairdocs.org/stc/SR02601SE): Fabrication and installation of an internal fire retardant tank. Croman Corporation
- [STC SR02507NY](https://openairdocs.org/stc/SR02507NY): Installation of a 600 pound capacity Goodrich AC rescue hoist system P/N 44311-10-2. Carson Helicopters, Inc
- [STC SR02077SE](https://openairdocs.org/stc/SR02077SE): Installation of the Observer Seat CRCS100-01. Croman Corporation
- [STC SR01427SE](https://openairdocs.org/stc/SR01427SE): Installation of S-61L fixed main landing gear. Croman Corporation
- [STC SR02267SE](https://openairdocs.org/stc/SR02267SE): Fabrication of replacement transmission fittings. Croman Corporation
- [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 SR01426SE](https://openairdocs.org/stc/SR01426SE): Fabrication and installation of components for a left seat pilot-in-command operation.. Croman Corporation
- [STC SR00319SE](https://openairdocs.org/stc/SR00319SE): Modification of Part Number S6137-23009-6 main transmission rear cover per. Croman Corporation
- [STC SR01771NY](https://openairdocs.org/stc/SR01771NY): Increase of Out of Ground Effect (OGE) Hover Performance.. Carson Helicopters Inc
- [STC SR01981SE](https://openairdocs.org/stc/SR01981SE): Fabrication and installation of an internal fire retardant tank. Croman Corporation
- [STC SR01585NY](https://openairdocs.org/stc/SR01585NY): Installation of Carson Helicopters, Inc. composite main rotor blades, P/N 163-101-1.. Carson Helicopters Inc
- [STC SR01288SE](https://openairdocs.org/stc/SR01288SE): Fabrication of Ag-Air Systems Model 36000 Auxiliary Hydraulic System.. Kawak Aviation Technologies Inc
- [STC SR01738SE](https://openairdocs.org/stc/SR01738SE): Installation of a Mechanical Specialties, Inc. model 6111, 11,000 pound capacity cargo hook. Mechanical Specialties Inc
- [STC SR02057NY](https://openairdocs.org/stc/SR02057NY): Upgrade of the S6135-20600 series main gearbox by replacing input free-wheeling units in accordance with Carson drawing.    IFWU INSTL Carson S-61 No. CHI-R-001, no revision, dated 12-15-04 and Carson Installation Instructions Report CHI-R-INSTALL, no revision, dated 12-14-04.. Carson Helicopters, Inc
- [STC SR00208NY](https://openairdocs.org/stc/SR00208NY): Installation of General Electric CT58-140-1 turboshaft engines.. Carson Helicopters Inc
- [STC SR01210NY](https://openairdocs.org/stc/SR01210NY): Extension of main rotor blade, P/N 61170-20201 series. For model S-61A, serial numbers 61-063, 61-147, 61-232, 61-272; for model S-61N, 61-216, 61-220, 61-242, 61-744; for model S-61R, 61-551.. Carson Helicopters, Inc
- [STC SR02373AT](https://openairdocs.org/stc/SR02373AT): Manufacture of a titanium transmission support fitting assembly.. Clayton International Inc.
- [STC SR00330NY](https://openairdocs.org/stc/SR00330NY): Installation of improved parts for rotor transmission support.. Carson Helicopters Inc
- [STC SR00205NY](https://openairdocs.org/stc/SR00205NY): Installation of fixed landing gear.. Carson Helicopters Inc
- [STC SR00207NY](https://openairdocs.org/stc/SR00207NY): Installation of Engine Air Inlet Screens.. Carson Helicopters Inc
- [STC SH3188NM](https://openairdocs.org/stc/SH3188NM): Pilot-in-Command position to be in either left or right seat with fully redundant controls and control-mounted switches. Croman Corporation
- [STC SH3189NM](https://openairdocs.org/stc/SH3189NM): Pilot-in-Command position to be in either left or right seat with fully redundant controls and control-mounted switches. Croman Corporation
- [STC SH2388NM](https://openairdocs.org/stc/SH2388NM): Installation of an Electronics International Digital Temperature Indicator with related thermocouples, adapters and harness to monitor the temperature fo the main gear box bearings.. Croman Corporation
- [STC SH2389NM](https://openairdocs.org/stc/SH2389NM): Installation of an Electronics International Digital Temperature Indicator with related thermocouples, adapters and harness to monitor the temperature fo the main gear box bearings.. Croman Corporation
- [STC SA1454NM](https://openairdocs.org/stc/SA1454NM): Installation of a forward left hand transmission fitting assembly fabricated from 4340 alloy steel. Croman Corporation

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