# TCDS H1WE: Siam Hiller Holdings Inc.

- Type: Type certificate data sheet
- Status: Current
- Holder: Siam Hiller Holdings Inc.
- Revision: 6
- Revised: October 28, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 133
- Registered aircraft: 3, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/80/4c/804c4bf18c939247d3655e4e3c53849ddd680e5f49e2fce302a7885474f314df
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4EF211FCA221A3BB86257ED000648763.0001
- Page: https://openairdocs.org/tcds/H1WE

## Models (2)

As the data sheet lists them.

- UH-12L4
- UH-12L

## What the data sheet says

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

```text
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
 
H1WE 
Revision 6 
SIAM HILLER 
 UH-12L 
 UH-12L4 
October 28, 2014 
 
TYPE CERTIFICATE DATA SHEET NO.  H1WE 
 
This data sheet which is a part of type certificate No.  H1WE prescribes conditions and limi tations under which the product for  
which the type certificate was issued meets the airworthiness requirements of the Civil Air Regulations.  
 
Type Certificate Holder: Siam Hiller Holdings, Inc. 
925 M. Street 
Firebaugh, California 93622-2234 
  
Type Certification Ownership Record: Hiller Aircraft Corporation transferred to  
Fairchild Industries, Inc. on 10/2/1959 
  
 Fairchild Industries, Inc. transferred to 
Heli-Parts, Inc. on 12/28/1972 
  
 Heli-Parts, Inc. transferred to 
Hiller Aviation on 12/28/1972 
  
 Hiller Aviation transferred to 
Rogerson Aircraft Corporation on 6/26/1984 
  
 Rogerson Aircraft Corporation transferred to 
Hiller Helicopters, a wholly owned subsidiary of Rogerson 
Aircraft Corporation on 6/29/1984 
  
 Hiller Helicopters, a wholly owned subsidiary of Rogerson 
Aircraft Corporation transferred to Rogerson Hiller 
Corporation on 11/14/1985 
  
 Rogerson Hiller Corporation transferred to  
Siam Hiller Holdings, Inc. on 7/14/1994 
 
I  Model UH-12L, Approved February 28, 1964 
 Model UH-12L4, Approved February 28, 1964 
  
 Engine  Lycoming VO-540-C2A or TIVO-540-A2A 
 
 Fuel  100/130 min. grade aviation gasoline 
 
 Engine limits for all MP 
 operations  Engine HP RPM IN.HG. ALT. FT. 
 
   VO-540-C2A 305 3200 26.0 S.L. 
    305 3200 25.2 (F.T.) 3,000 
   TIVO-540-A2A 315 3200 F.T. S.L. 
    315 3200 F.T. 13,000

H1WE 2 
I  Model UH-12L, Approved February 28, 1964  
 Model UH-12L4, Approved February 28, 1964 (Cont’d) 
 
Rotor limits and  Power Off (Rotor Tach.) Power On (Engine Tach.) 
engine operating 
speeds  Maximum 370 r.p.m. Maximum 3,200 r.p.m. 
   Minimum 285 r.p.m. Minimum (S.L. to 
   (VO-540-C2A only 10,000 ft.) 3,000 r.p.m. 
   Avoid continuous (Above 10,000 ft. increase 
   operation between 210 min. r.p.m. by 10 r.p.m. for 
   and 225 r.p.m.) each additional 1,000 ft. of altitude) 
 
Airspeed limits (IAS) Model UH-12L (Basic Vne (Never exceed speed) 107 m.p.h. 
   Skid Gear Configuration)  (93 knots) IAS 
 
   The above airspeed applies from S.L. to 6,000 ft. 
   Decrease Vne 4 m.p.h. (3.5 knots) per 1,000 ft. of altitude above 6,000 ft. 
 
   For limits with accessories installed see FAA Approved Rotorcraft Flight Manual. 
 
   Model UH-12L4 (Basic Skid Gear Configuration). 
    Vne 106 m.p.h. 
    (92 knots) IAS 
 
   The above airspeed applies from S.L. to 6,000 ft. 
   Decrease Vne 3 m.p.h. (2.6 knots) per 1,000 ft. of altitude above 6,000 ft. 
 
   For limits with accessories installed see FAA Approved Rotorcraft Flight Manual. 
 
 Altitude limits  Avoid operational areas as shown in FAA Approved Rotorcraft Flight Manual. 
 
 C.G. range (longitudinal) Model UH-12L Sta. (79.5) to (84.8) (Basic Skid Gear Configuration) 
   Model UH-12L4 Sta. (79.5) to (86.4) (Basic Skid Gear Configuration) 
   For range with accessories installed see FAA Approved Rotorcraft Flight Manual. 
 
 C.G. range (lateral) Left of helicopter centerline, 3.28 in.  (Basic Skid Gear Configuration) 
   Right of helicopter centerline,1.82 in.  (Basic Skid Gear Configuration) 
   For range with accessories installed see FAA Approved Rotorcraft Flight Manual. 
 
 Datum  107.25 in. fwd.  of tail boom - fuselage upper mounting face. 
 
 Leveling means Top face of flanges under seat 
 
 Maximum weight 3100 pound 
 
 No. of seats  Model UH-12L: 3 (53) 
   Model UH-12L4: 4 (3 at 53, 1 at 25) 
 
 Maximum baggage  See loading instructions in FAA Approved Rotorcraft Flight Manual. 
 
 Fuel capacity  Main tank 46 gal. (82.9).  See Note 1 for data on unusable fuel. 
 
 Oil capacity  Engine oil - 2 gal.  (94) or 2.75 gal.  (94) with auxiliary fuel tanks installed. 
   Transmission oil - 1.12 gal.  (94) 
 
 Other operating FAA Approved Rotorcraft Flight Manual. 
 limitations 
 
 Rotor blade & control (Measured with respect to the mast) (Note:  When the mast is vertical the helicopter is  
 movements  1° nose up).

3 H1WE 
I  Model UH-12L, Approved February 28, 1964  
 Model UH-12L4, Approved February 28, 1964 (Cont’d) 
 
 Main rotor blade +8 1/2° ±0.1° to +20 1/2° ±1/4° 
 collective travel 
 
 Wobble plate cyclic Model UH-12L4 Model UH-12L 
 travel  Lateral 6 1/4° ± 1/4° Lateral 7° 45' ± 1/4° left 
   right and left 4° 42' ± 1/4° right 
   Longitudinal Longitudinal 9 1/4° ± 1/4° 
   9 1/4° ± 1/4° forward and aft 
   forward and aft 
 
 Tail rotor collective -4° ± 1/2° to +20° ± 1/2° 
 travel 
 
 Horizontal stabilizer Model UH-12L -4° ±1° 
 setting  Model UH-12L4 +3° ± 1° 
 
 Serial Nos. eligible Model UH-12L 3500 to 4499 (See Note 5 for additional serial  
    nos. eligible). 
   Model UH-12L4 2500 to 3499 
 
 Certification basis CAR 6 dated December 20, 1956 including Amendments 6-1 through 6-4. 
   Type Certificate H1WE issued February 28, 1964. 
   Date of Application for Type Certificate February 28, 1961. 
 
 Production basis Production Certificate No. 423WE, Spare Parts Only 
 
 Equipment:  The basic required equipment as prescribed in the applicable air worthiness regulations  
   (See Certification Basis) must be installed in the helicopter for certification.  Hiller  
   Report 63-109, "Model UH-12L Master Equipment List", and Report 63-108, "Model  
   UH-12L4 Master Equipment List", contain a list of all required equipment that must be  
   installed as well as optional equipment installations approved by the FAA. 
 
NOTES: 
 
NOTE 1. Current weight and balance report including list of equipment included in certificated empty weight, and  
  loading instructions, must be provided for each helicopter at the time of original certification.  Ballast, when  
  necessary, must be carried in accordance with Loading Instructions in the FAA Approved Rotorcraft Flight  
  Manual. 
 
  Fuel capacity as indicated is total tank capacity over and above "Unusable Fuel".  The fuel tan k capacity  
  includes "Unusable" fuel of 0.3 gallon, Model UH-12L and 3.2 gallons, Model UH-12L4, which cannot be  
  used safely in all flight attitudes, and which must be included in the empty weight.  
 
NOTE 2. The following placard must be installed on the Pilot's Checklist: 
 
  "This Helicopter must be operated in compliance with the operating limitations specified in the FAA  
  Approved Rotorcraft Flight Manual." 
 
  For additional placards, see the FAA Approved Rotorcraft Flight manual. 
 
NOTE 3. The retirement times of critical parts are listed in the following table.  These values of retirement or service  
  life cannot be increased without FAA Engineering Approval. 
 
  FINITE LIFE COMPONENT PART NO. HOURS 
  Blade Assy., Main Rotor 53100 9250 
  Cuff Assy., Main Rotor 51456 7300 
  Hub, Main rotor  51455 6300

H1WE 4 
NOTE 3. (Cont’d) FINITE LIFE COMPONENT PART NO. HOURS 
  Rod Assy., Drag Link, Main Rotor 52125 57250 
  Terminal, Drag Strut, Main Rotor (Blade End) 52124-3 63750 
  Terminal, Drag Strut, Main Rotor (Cuff End) 52122-7 53600 
  Bolt (Drag Strut, Blade End) NAS 1307-24 47600 
  Bolt (Drag Strut, Cuff End) NAS 1307-21 46850 
  Bar Assy., Tension-Torsion, Tail Rotor 55054 12500 
  Blade Assy., Tail Rotor 55073 3240 
  Shaft Assy., Output, Speed Decreaser 25202-5 5790 
  Gimbal Assy., Outer, Engine Mounting 63309 6360 
  Yoke Assy., Mixing, Cyclic & Collective Controls 30034 63850 
  Arm, Mixing, Cyclic and Collective Controls, 30036 10940 
  Assy. of 
  Bracket Assy., Transmission, Cyclic Controls 33333-5 2120 
  Gimbal Ring, Wobble Plate 34008 73500 
  Ring Assy., Wobble Plate, Inner 34017 77980 
  Sleeve Assy., Wobble Plate, Cyclic Controls 34038 42910 
  Rod End (Conair)  8127 69060 
  Yoke, Tail Rotor  55046 2500 
 
NOTE 4. These Helicopters must be serviced and maintained in conformance with instructions given by Fairchild  
  Hiller Corporation, in the pertinent model inspection guide, repair handbook, and service and overhaul  
  manuals. 
 
NOTE 5. Model UH-12E Helicopters (3 and 4 place configurations) may be converted to Model UH-12L or UH-12L4  
  by accomplishment of Hiller Service Bulletins No. 2040 (Dwg.  10060) or No.  2045 (Dwg.  10059)  
  respectively. 
 
NOTE 6. The type certificate holder has demonstrated compliance with FAR 133.43 for the UH-12L and UH-12L4  
  Helicopters for Class B (Jettisonable Sling Load) Rotorcraft - load combination at a maximum overall weight  
  of 3500 pounds and a maximum sling load of 1000 pounds, when modified to incorporate cargo hook  
  installation per Hiller Dwg.  91012-23 (UH-12L4) and 91012-25 (UH-12L).  The helicopter weight without  
  sling load is not to exceed certificated weight of 3100 pounds.  For limitations see pertinent FAA Approved  
  Rotorcraft Flight Manual Revision and Rotorcraft - Load Combination Flight Manual to be submitted by  
  applicant for external load operator's certificate in accordance with FAR part 133.  
 
NOTE 7. Certain part numbers used on this model helicopter may be used on other model helicopters in 
which their use is life limited. These part numbers are listed in TCDS 4H11, H1WE, 4H10, 6H1, 
and 6H2 and FAA approved Hiller Instructions for Continued Airworthiness. If a full and 
complete service history from manufacture forward is not available that demonstrates these parts 
were used only on a model helicopter for which the part is not life limited then those parts shall be 
life limited to the lowest number of hours given in those TCDS’s or ICAs. If a full and complete 
service history from the manufacturer forward is available, and any operating time has occurred in 
a life limited model helicopter, that part shall be considered life limited at the lowest life limit 
listed even if transferred and used on a helicopter model for which it is not life limited. Only those 
parts for which a full and complete service history from manufacture forward is available and 
which shows only operating time on a helicopter model for which it is not life limited are 
considered not life limited. 
 
 
 
...END...
```

## ADs (21, in force first)

- [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023
- [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 2000-24-21](https://openairdocs.org/ad/2000-24-21): Control System Linkage · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Jan 10, 2001
- [AD 90-15-01](https://openairdocs.org/ad/90-15-01): Tail Rotor Blade Assemblies · Hiller UH-12L, UH-12L4, UH-12E and 1 more. Effective Mar 7, 1991
- [AD 83-25-02](https://openairdocs.org/ad/83-25-02): Main Rotor Blade Doublers · Allison 250-C20/250-C20B engine (Siam Hiller Holdings STC SH177WE). Effective Dec 29, 1983
- [AD 82-16-07](https://openairdocs.org/ad/82-16-07): Torsional Coupling Assemblies · Hiller UH-12L, UH-12L4, UH-12E and 1 more. Effective Oct 15, 1982
- [AD 82-13-04 R1](https://openairdocs.org/ad/82-13-04-R1): Torsional Couplings · Hiller UH-12L, UH-12L4, UH-12E and 1 more. Effective Sep 13, 1982
- [AD 82-15-02](https://openairdocs.org/ad/82-15-02): Main And Tail Rotors · Hiller UH-12D, UH-12L, UH-12L4 and 2 more. Effective Jul 16, 1982
- [AD 81-18-02](https://openairdocs.org/ad/81-18-02): Tail Rotor Skin Cracks · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Sep 10, 1981
- [AD 81-17-03](https://openairdocs.org/ad/81-17-03): Main Transmission · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Aug 24, 1981
- [AD 81-17-01](https://openairdocs.org/ad/81-17-01): Starting Vibrator Assemblies · Bendix Starting Vibrator Assemblies, B-2, B-2A and 49 more. Effective Aug 13, 1981
- [AD 81-04-01](https://openairdocs.org/ad/81-04-01): Rudder Cable Assembly · Hiller UH-12D, UH-12L and UH-12E. Effective Feb 9, 1981
- [AD 77-24-03](https://openairdocs.org/ad/77-24-03): Fuel Control Valve · Hiller UH-12C, UH-12D, UH-12L and 3 more. Effective Jan 6, 1978
- [AD 75-10-01](https://openairdocs.org/ad/75-10-01): Rotor Drive System · Hiller UH-12D, UH-12L, UH-12L4 and 2 more. Effective May 8, 1975
- [AD 72-13-08](https://openairdocs.org/ad/72-13-08): Main Rotor Blades · Hiller UH-12L, UH-12L4 and UH-12E-L. Effective Oct 19, 1972
- [AD 71-25-08](https://openairdocs.org/ad/71-25-08): Inspect Main Rotor Blades · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Dec 14, 1971
- [AD 69-13-07](https://openairdocs.org/ad/69-13-07): Collective Yoke Support Brackets · Hiller UH-12D, UH-12L, UH-12L4 and 2 more. Effective Apr 30, 1970
- [AD 69-08-08](https://openairdocs.org/ad/69-08-08): Tail Rotor Yoke · Hiller UH-12D, UH-12L, UH-12L4 and 2 more. Effective Apr 23, 1969
- [AD 66-22-04](https://openairdocs.org/ad/66-22-04): Mercury Clutches · Hiller UH-12D, UH-12L, UH-12L4 and 2 more. Effective Sep 2, 1966
- [AD 2015-20-51](https://openairdocs.org/ad/2015-20-51): Hiller UH-12, UH-12A, UH-12B and 6 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

## Registered aircraft by registry model (OpenAirDocs)

- [Hiller UH-12L4](https://openairdocs.org/model/hiller-uh-12l4): 3 aircraft (registry code 4360128)
- [Hiller UH-12L](https://openairdocs.org/model/hiller-uh-12l): 0 aircraft (registry code 4360126)
- [Rogerson Hiller UH-12L](https://openairdocs.org/model/rogerson-hiller-uh-12l): 0 aircraft (registry code 4367001)
- [Rogerson Hiller UH-12L4](https://openairdocs.org/model/rogerson-hiller-uh-12l4): 0 aircraft (registry code 4367003)

## STCs approved under this data sheet (32)

- [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 SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC
- [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.. Whelen Aerospace Technologies
- [STC SR00420NY](https://openairdocs.org/stc/SR00420NY): Installation of Airwolf remote mounted engine oil filter Model AFC-600. Airwolf Filter, Corp
- [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 SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc.
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories.. Electronics International Inc.
- [STC SA593CH](https://openairdocs.org/stc/SA593CH): Install Champion SlickSTART magneto booster system.. Champion Aerospace LLC
- [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line.. M-20 Oil Separators LLC
- [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.. Electronics International
- [STC SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP.. M-20 Oil Separators LLC
- [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches.. Aero Manufacturing Inc.
- [STC SA1626NM PAGE 1](https://openairdocs.org/stc/SA1626NM%20PAGE%201): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International
- [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer.. Electronics International
- [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.. Electronics International
- [STC SH3362NM](https://openairdocs.org/stc/SH3362NM): Installation of a Tail Rotor Blade Protective Coating. Columbia Helicopters Inc
- [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories.. Electronics International
- [STC SH155WE](https://openairdocs.org/stc/SH155WE): Installation of battery temperature monitor system.. K S Avionics, Inc
- [STC SH618NW](https://openairdocs.org/stc/SH618NW): Installation of the Onboard Weighing System Adapter No. 1500, for use with Eastern Rotorcraft Cargo Hook No 2A15E. Onboard Weighing Systems
- [STC SH165NW](https://openairdocs.org/stc/SH165NW): Installation of Model 1620 and 1621 aerial seeders systems.. Simplex Manufacturing Co
- [STC SH446EA](https://openairdocs.org/stc/SH446EA): Installation of Franklin engine Model 6V-350B in Fairchild Hiller UH-12A helicopter.. Franklin Engine Co Inc
- [STC SH80WE](https://openairdocs.org/stc/SH80WE): Installation of Simplex thirty-two foot spray boom.. Simplex Manufacturing Co
- [STC SH1-457](https://openairdocs.org/stc/SH1-457): Aircooler Motors 6VS-335B turbo-supercharged engine (derated).. Carson Helicopters Inc
- [STC SH160AL](https://openairdocs.org/stc/SH160AL): Airborne control survey system.. US Dept of Interior
- [STC SH32WE](https://openairdocs.org/stc/SH32WE): Fabricate and install jump-step.. USDA Forest Service
- [STC SH4-1101](https://openairdocs.org/stc/SH4-1101): Aerofilter 30690B with element1A0286.. Winslow Aerofilter Corp
- [STC SH4-178](https://openairdocs.org/stc/SH4-178): Curved control stick.. Nystrom Aviation Inc
- [STC SH52WE](https://openairdocs.org/stc/SH52WE): High volume fifty foot spray boom kit.. Simplex Manufacturing Co
- [STC SH77AL](https://openairdocs.org/stc/SH77AL): Tundra snow shoes.. ERA Helicopters Inc
- [STC SH9AL](https://openairdocs.org/stc/SH9AL): Airglas tundra pads L-100.. Intl Helicopters
- [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories.. Electronics International

---
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