- Holder
- Siam Hiller Holdings Inc.
- Revision
- 7
- Revised
- October 28, 2014
- Status
- Current
- Product
- Aircraft · Rotorcraft
- Certification basis
- CAR 6
- Models
- 1
- Registered
- 32 aircraft
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 1
| Model | Also known as | Note |
|---|---|---|
| UH-12D | Formerly Hiller Aviation · U.S. Army H-23D |
Airworthiness directives · 41
ADs whose products are models on this data sheet, matched by model and maker.
AD 2000-24-21Control System LinkageAD 97-20-15Outboard Tension-Torsion Bar PinAD 97-10-16Blade Spar Tube and Cuff Inspection
See all 41 ADsRegistered aircraft
Registry models that point at this data sheet, with their registered aircraft.
Hiller UH-12D22 registered aircraftHiller H-23D6 registered aircraftHiller OH-23D2 registered aircraftHiller-Osborn UH-12D2 registered aircraftHiller-Houska UH-12D0 registered aircraftHiller-Northern UH-12D0 registered aircraftRogerson Hiller H-23D0 registered aircraftRogerson Hiller UH-12D0 registered aircraft
STCs approved under this data sheet · 43
STC SA4503NMRemove original cloth covering and install Ceconite coveringSTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,STC SR02704SEInstallation and maintenance of the Sunspot 36 and 46 series lights
See all 43 STCsWhat the data sheet says
From the PDF’s text layer, line by line: tables lose their columns. The PDF is the record.
DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
4H10
REV 7
SIAM HILLER
UH-12D
(ARMY H-23D)
October 28, 2014
TYPE CERTIFICATION DATA SHEET NO. 4H10
This data sheet which is a part of type certificate No. 4H10 prescribes conditions and limitations 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
1. MODEL UH-12D (Army H-23D), UTILITY CATEGORY, APPROVED DECEMBER 23, 1957
Engine Lycoming VO-435-A1C
Fuel 80/87 Min. grade aviation gasoline
Engine limits
for all operations
Maximum RPM 3200 (250 HP)
4H10 2
Power Off (Rotor Tach) Power on (Engine Tach.)
Rotor limits and
engine operating
speeds
Maximum 395
Minimum 314
Maximum 3200 RPM
Minimum (S.L. to 6000 ft.) 2900 RPM
(Above 6000 ft., increase minimum RPM
by 33 RPM for each additional 1000 ft. of
altitude).
Airspeed limits Configuration VNE (Never Exceed) IAS
Skid Gear 83 Knots
Skid and Litters 66 Knots
Note: The above airspeeds apply from S.L. to 2000 ft. Decrease Vne 2.0 knots
per 1000 ft. of altitude above 2000 ft. For limits with other accessories, see FAA
approved Rotorcraft Flight Manual.
Altitude limits Avoid operation areas as shown in approved Flight Manual.
C.G. range Configuration
Skid Gear (79.5) to (84.8)
Skid & Litters (79.5) to (84.8)
For range with other accessories see FAA Approved Rotorcraft Flight Manual
Empty weight C.G. range None
Datum 107.25 in. fwd. of tail boom-fuselage upper mounting face.
Leveling means Top face of flanges under seat
Maximum weight 2750 LBS.
Number of seats 3 (53)
Maximum Baggage None
Fuel capacity Main tank 46 gals. (82.9) (45.8 usable)
Oil capacity 2.3 gals (94)
Rotor blade movements (Measured with respect to the mast) (NOTE: When the mast is vertical, the
helicopter is 1° nose up)
Main blades:
Collective pitch Low setting +1.0°, Total travel 10.5° (Measured at Retention Plate) (Low
setting is determined as the lowest which will preclude overspeeding in
autorotation)
Teetering Control rotor ±12°, Main rotor ± 9°
Wobble plate:
Lateral ±7.7° to ±8.3°
Longitudinal Fwd. 8.0° to 8.5°, Aft. 9.0° to 9.2°
Control blades:
Neutral +9° incidence (Rotor hub and wobble plate perpendicular to mast)
Anti-torque rotor blades:
Flapping +17° to -17°
Collective pitch +15° to -3°
Horizontal stabilizer setting Configuration
Skid Gear
(with Helicopter level)
0°
Skid and Litters 0°
4H10 3
(For setting with other accessories installed, see FAA approved Rotorcraft Flight
Manual)
Mfr’s. Serial Nos. eligible UH-12D: None. H-23D: 938 through 1034 and 1046 through 1438 except 942
and 954. In order for individual Model H-23D helicopters procured under
military cognizance and not having been issued a Form ACA-970, “Conformity
Certificate - Military Aircraft,” to be eligible for airworthiness certification as a
Model UH-12D, it must be determined in each case that the helicopter conforms
to the type design. The manufacturer’s serial number should be used in each
case.
Required equipment In addition to the pertinent required basic equipment specified in CAR 6, the
following items of equipment must be installed: 1, 2, 3, 4, 6, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 205, 206, 301, 302, 303, 304, 309, 405, 602.
Specifications Pertinent to All Models
Certification basis Type Certificate No. 4H10 (CAR 6 as amended August 25, 1955)
Production basis Production Certificate No. 423WE, Spare Parts Only
Equipment:
Rotors and Rotor Equipment
1. 2 main rotor blades
(a) Parsons Dwg. 2253-1101-02, (b) 2253-1101-03, (c) 2253-1101-04 158 lbs. (84)
2. 2 control blades 33lbs. (84)
(a) Hiller Dwg. 36123
3. 2 tail rotor blades
(a) Hiller Dwg. 55073 6 lbs. (328)
4. Collective pitch ballast system
(a) Hiller Dwg. 30026 5 lbs. (84)
5. Dual control kit installation
(a) Hiller Dwg. 30020 13 lbs. (50)
6. 2 Vibration absorbers
(a) Hiller Dwg. 33023-3 3 lbs. (73)
7. 2 Control rotor spar fairings
(a) Hiller Dwg. 36003 2 lbs. (84)
8. Rotor brake installation (Item 405 (b) required)
(a) Hiller Dwg. 22000 8 lbs. (74)
ENGINE AND ENGINE ACCESSORIES - FUEL AND OIL SYSTEMS
101. Oil cooler
(a) Harrison No. 8526134 5 lbs. (76)
102. Engine air intake system
(a) Hiller Dwg. 76259 and 76190 3 lbs. (102)
4H10 4
103. Fuel pump
(a) Lear Romec RD7430-5A, RG15980E 1 lb. (85)
104. Auxiliary fuel pump
(a) Lear Romec RG15150-B, or H 3 lbs. (78)
105. Fan, Hiller Dwg. 74150 3 lbs. (78)
106. Carburetor zone support bracket, Hiller Dwg. 75060 1 lb. (97)
107. Starter
(a) AN4116R1A or equivalent 20 lbs. (84)
108. Unusable fuel (See Note 1 for definition) 1 lb. (70)
109. Trapped fuel (when drained in normal ground attitude from tank) 6 lbs. (84)
110. Trapped oil (when drained in normal ground attitude from tank) 4 lbs. (94)
111. 2 Tachometer generators 3 lbs. (78)
LANDING GEAR
205. Skid type gear, less scuff plates, handling wheels and axles
(a) Hiller Dwg. 32036 84 lbs. (73)
206. Tail skid, Hiller Dwg. 42202-7 1 lb. (303)
207. Skid gear scuff plates installation
(a) Hiller Dwg. 43015 and 43016 4 lbs. (44)
208. Float gear installation (Item 405 (b) required)
(a) Hiller Dwg. 44012 154 lbs. (81)
ELECTRICAL EQUIPMENT
301. Generator
(a) Eclipse Pioneer 30B24-1-A or equivalent 14 lbs. (85)
302. Battery
(a) Standard (AN-3151-2) 52 lbs. (75)
303. Voltage regulator, G.E. CR2795E-100AL 5 lbs. (91)
304. Generator cutout, Hartman No. A-718AP 3 lbs. (82)
306. Landing and navigation light kit
(a) Hiller Dwg. 83217 2 lbs. (45)
309. Standard battery rack installation, Hiller Dwg. 61417, less battery 1 lb. (75)
310. Alternator
(a) Jasco 7555-1-72 per Hiller Dwg. 83230 (alternate for Items 301(a), 303 and
304)
13 lbs. (85)
Interior Equipment
405. (a) Hiller Helicopter Model UH-12D FAA Approved Flight Manual dated December 23, 1957.
4H10 5
(b) Hiller Helicopter Model UH-12D FAA Approved Flight Manual Revision dated October 2, 1959 or
subsequent FAA Approved Revisions. (Required with Items 8, 208, 605 and 608).
(c) Hiller Helicopter Model UH-12D FAA Approved Flight Manual Revision dated March 25, 1960 or
subsequent FAA Approved Revisions. (Required with Items 609, 610 and 611).
Miscellaneous (not listed above)
601. Cabin heater installation
(a) Hiller Dwg. 88044 1 lb. (63)
602. Ballast bar
(See loading instructions in Flight Manual regarding Ballast location and necessity for its use)
(a) Hiller Dwg. 62244 9 lbs
605. Litter installation (2) Hiller Dwg. 96190 with skid gear (Item 606 must also be
installed - installation of litters must be in pairs only on skid gear - right hand litter
may be removed on float gear - right hand litter may be removed on float gear
installation - Heater Installation, Hiller Dwg. 88018 is optional - Item 405 (b)
required) 60 lbs. (75)
606. Litter shoulder harness (2), Hiller Dwg. 96191 6 lbs. (68)
607. Shoulder harness installation Hiller Dwg. 85053 or 85067. (If this item is removed,
the seat back support cables are to be retained)
14 lbs. (63)
608. Cargo rack installation with skid gear & float gear (Item 405 (b) required)
(a) Hiller Dwg. 98003 34 lbs. (66)
609. Rescue hoist installation - operation involving use of rescue hoist permitted in restricted category only
(Item 405 (c) required)
(a) Hiller Dwg. 96140 66 lbs. (72)
610. Cargo hook installation - operation with load on cargo hook permitted in restricted category only (Item 405
(c) required)
(a) Hiller Dwg. 91012 9 lbs. (73)
611. Auxiliary fuel tank installation (Item 405 (c) required)
(a) Hiller Dwg. 72025 48 lbs. (85)
NOTE 1. Current weight and balance report including list of equipment included in certificated weight empty,
and loading instructions must be in each helicopter at the time of original certification and at all
times thereafter (except in the case of air carrier operators having an approved weight control
system). Ballast, when necessary, must be carried in accordance with Loading Instructions in the
Approved Flight Manual.
Fuel and oil capacities as indicated are total tank capacities over and above “Trapped Fuel and Oil.”
The fuel tank capacity includes “Unusable” fuel of 0.2 gallons, which cannot be used safely in all
flight attitudes, and which must be included in the empty weight.
NOTE 2. The following placards must be installed so as to be in full view of the pilot :
(a) Below airspeed indicator: “Decrease Vne 2.0 knots per 1000 feet of altitude above 2000 feet.”
(b) Below tachometer: “Above 6000 ft, see operating limitations.”
(c) On cabin heater outlet: “Use cabin heat in cruise and climb only.”
(d) On pilot’s checklist:
4H10 6
(1) If ash tray is not installed: “No smoking.”
(2) “This helicopter must be operated in compliance with the operating limitations in the FAA
approved Rotorcraft Flight Manual.”
(3) “Instrument flight prohibited”
(4) “No acrobatic maneuvers approved.”
(5) “Unsymmetrical loading must be to the left.”
(6) “Avoid protracted rearward flight.”
(7) “See Loading Instructions in Flight Manual.”
(e) On removable ballast weight: “See Loading Instructions in Flight Manual for proper usage.
NOTE 3. Information essential to the proper maintenance of the rotorcraft (helicopter) including retirement
times of critical parts is included in the manufacturer’s maintenance instructions provided with each
rotorcraft. These values of retirement or service life cannot be increased without FAA Engineering
approval.
NOTE 4. These helicopters must be serviced and maintained in conformance with instructions given by Hiller
Helicopters in the pertinent model inspection guide, repair handbook, and service and overhaul
manuals.
NOTE 5.
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-