- Holder
- General Electric Company
- Revision
- 6
- Revised
- May 1, 1976
- Status
- Current
- Product
- Engine
- Certification basis
- CAR 13
- Models
- 3
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 3
| Model | Also known as | Note |
|---|---|---|
| CJ805-23B | ||
| CJ805-23 | ||
| CJ805-23C |
Airworthiness directives · 4
ADs whose products are models on this data sheet, matched by model and maker.
Registered aircraft
Registry models that point at this data sheet, with their registered aircraft.
What the data sheet says
From the PDF’s text layer, line by line: tables lose their columns. The PDF is the record.
Page No. 1 2 3
Rev. No. 6 6 6
Reformatted 10/94
DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
1E5
Revision 6
GENERAL ELECTRIC
CJ805-23
CJ805-23B
CJ805-23C
May 1, 1976
TYPE CERTIFICATE DATA SHEET NO. 1E5
Engines of models described herein conforming with this data sheet (which is a part of type certificate No. 1E5) and other
approved data on file with the Federal Aviation Administration, meet the minimum standards for use in certificated aircraft in
accordance with pertinent aircraft data sheets and applicable portions of the Civil Air Regulations/Federal Aviation Regulations
provided they are installed, operated, and maintained as prescribed by the approved manufacturer's manuals and other approved
instructions.
Manufacturer General Electric Company
Aircraft Engine Group
Cincinnati, Ohio 45215
Model CJ805-23 CJ805-23B, -23C
Type Aft fan: 17 stage axial compressor, 3
stage turbine, cannular type combustion
chamber, with free-floating single-stage
fan aft of turbine
- -
Rating
Maximum continuous at sea level, static thrust, lb. 14,100 14,400
Takeoff (5 min.) at sea level, static thrust, lb. 15,850 16,100
Fuel control, Woodward G.E. P/N 107RJ22 - -
CIT sensor, Woodward G.E. P/N 512D737 - -
Fuel pump Pesco 022819 two-element gear type
fuel pump
- -
Fuel Conforming to GE Specification
D50TF2 (See NOTE 10)
- -
Oil Synthetic type conforming to G.E.
Specification D50TF1. G.E. Operation
Engineering Bulletin No. 7 lists
approved brand oils.
- -
Principal dimensions:
Length, in. 130.6 (excluding jet nozzle and exhaust
cone)
- -
Width, in. 56.0 (maximum envelope) - -
Height, in. 56.0 (maximum envelope) - -
Center of gravity location:
Aft of front frame flange fwd. face, in. 68.5 - -
Below engine centerline, in. .7 - -
Weight (dry), lb. (including basic engine accessories,
oil supply tank, but excluding starter, ignition
system power source, jet nozzle and exhaust tailcone)
3810 - -
Ignition system (110 volts, 400 cycle) Two ignition units GLA Model 40634,
42000, 42028 or 42398. Two igniter
plugs AC JB-805 or JC-805 (See
NOTE 16); or Champion AA-30S-X1,
AA-30S-1, AA-30S-5, or AA-30S-9
(See NOTE 15 and 16)
- -
NOTES 1 through 17 - -
"- -" indicates "same as preceding model."
1E5 2
Certification basis:
Regulation and Date of Date Type Certificate
Amendments Model Application No. 1E5 Issued/Revised
CAR 13 effective June 15, 1956 CJ805-23 September 4, 1959 June 2, 1960
as amended by 13-1, 13-2 and 13-3 CJ805-23A May 11, 1960 Deleted March 22, 1961
CJ805-23B May 2, 1961 September 21, 1961
CJ805-23C March 4, 1960 March 22, 1961
Production basis: Production Certificate No. 108.
NOTE 1. Maximum permissible temperatures:
Turbine exhaust gas temperatures: (See NOTE 16)
Takeoff (5 min.) 1170°F
Maximum continuous 1095°F
Maximum for acceleration (2 min.) 1202°F
Maximum transient for starting (4 sec.) 1400°F
Oil inlet temperature 250°F
Accessory drive zone, maximum ambient 300°F
air temperature
NOTE 2. Fuel and Oil Pressure Limits:
Fuel: Minimum at engine pump inlet, 4 p.s.i. above absolute fuel vapor pressure with maximum of 50 p.s.i. above
absolute ambient atmospheric pressure.
Oil: At idle, 7 p.s.i.g. minimum
Operating range, 25 to 65 p.s.i.g.
NOTE 3. Aircraft accessory drive provisions are the following:
Maximum Torque Maximum
Speed (in. -lb.) Overhang
Drive Rotation* Ratio Continuous** Static (in. -lb.)
Starter C 1.000 4800 720
0
625
CSD and generator CC 1.000 (79 hp.) 600
0
2000
Hyd. pump (2 pads) C 0.482 1000 440
0
400
Tachometer*** C 0.562 17 45 4
*"C" - clockwise, "CC" counter-clockwise, facing drive.
**Combined customer accessory load not to exceed 113 hp. at engine idle speed (4474 r.p.m.) and 138 hp.
at engine takeoff speed (7684 r.p.m. with a straight line relationship between these points.)
***Tachometer generator is standard equipment and is furnished by engine manufacturer.
NOTE 4. Engine ratings are based upon calibrated stand performance under the following conditions:
G.E. bell mouth air inlet
Compressor inlet air 59°F, 29.92 in. Hg.
No external air bleed or accessory drive power for aircraft accessories.
No anti-icing airflow.
Turbine exhaust gas temperature limits not exceeded.
Below 59°F, the sea level static limitations for these models will increase as follows:
For -23: to 16150 lb. max. at 52°F for T.O.; to 14850 lb. max. at 36°F for M.C.
For -23B, -23C: to 16300 lb. max. at 52°F for T.O.; to 15500 lb. max. at 36°F for M.C.
Complete performance parameters are contained in the following G.E. Performance Bulletins:
For -23: G.E. No. R60FPD593
For -23B: G.E. No. GEI 67896
For -23C: G.E. No. GEI 67897
3 1E5
NOTE 5. For CJ805-23 and -23B: Maximum air bleed air extraction for aircraft purposes is 10 percent for engine speeds from
idle to 6714 r.p.m., dropping to 5 percent at any speed in excess of 6714 r.p.m. For -23C air bleed limits refer to
page E-2 of Performance Bulletin GEI-67897.
NOTE 6. United Aircraft Products fuel heater and oil cooler are provided. Fuel heater automatically controls minimum fuel
temperature within limits of 33°F to 45°F.
NOTE 7. Monument Engineering Company oil tank is provided and contains two separate oil compartments. One contains
4.1 gallons for engine lubrication, the other 1.8 gallons for the CSD unit.
NOTE 8. The engine meets FAA requirements for operation in icing conditions; for adequate turbine and fan disc integrity and
rotor blade containment and, except for the aft fan component, does not require external armoring. The aft fan
casing requires and external blucket guard conforming to G.E. Drawing Nos. 639E401 together with 107R789; or
replacement guard G.E. P/N 110R133 together with 110R135.
NOTE 9. Maximum permissible engine main rotor speed is 7684 r.p.m. Maximum permissible fan rotor speed is 5965 r.p.m.
The engine control incorporates an automatic feature limiting the engine gas generator corrected speed to 7910
r.p.m. This corresponds to takeoff physical speed of 7684 r.p.m. at 30°F
NOTE 10. Approved fuel conforming to G.E. Specification D50TF2, MIL-T-5624, Grades JP-4 or JP-5, ASTM 1655-65T, Jet
A, A1 and B are consistent with this General Electric Specification. Primary fuel is Jet A with other fuels listed
being acceptable alternates. No fuel control adjustment is required when changing from primary to alternate fuels.
The use of aviation gas as emergency fuel is permissible provided that its use is recorded and limited to no
more than 10 hours during any one hot section inspection period.
NOTE 11. Deleted.
NOTE 12. G.E. Thrust Reverser model 7H-TR-30 or -30A is approved in accordance with CAR 13.260(a) for incorporation on
engine models -23 and -23B.
NOTE 13. Engine model -23B is similar to model -23 except it incorporates improved parts and features and increased ratings.
Engine model -23C is similar to model -23B except it has side mounting provisions.
NOTE 14. Engine model CJ805-23 may be modified per G.E. Service Bulletin (23)72-40. This modification incorporates the
CJ805-23B compressor components in the -23 engine. Engines so modified are approved for a sea level static thrust
takeoff rating of 15,940 lbs. in accordance with CJ805-23 Performance Deck R61FPD481 (AAL engine
configuration) and shall be identified by adding a suffix letter "F" to the engine serial number on the nameplate.
NOTE 15. See G.E. Service Bulletin No. 74-3(-23) or 74-1(-23B) prior to use of igniter plug AA-80S-9 or JC-805.
NOTE 16. Engine models CJ805-23, modified per G.E. Service Bulletin (-23) 72-40, and CJ805-23B may be modified with
Low Smoke Combustors per G.E. Service Bulletins (990) 72-308, (990)73-47 and (990) 74-10. These modifications
incorporate new design of combustors and fuel nozzles, longer igniter plug, modification of fuel control and
increased flow area in stage 1 turbine nozzle. Engines so modified are approved for maximum permissible turbine
exhaust gas temperatures:
Takeoff (5 min.) 1216°F
Maximum Continuous 1141°F
Maximum for Acceleration (2 min.) 1248°F
Maximum Transient for Starting (4 sec.) 1400°F
All three of the above Service Bulletins must be incorporated currently. Neither the replaced components nor these
modifications are individually interchangeable.
NOTE 17. Life limits established for critical rotating components are published in the CJ805 Overhaul Manual, Inspection
Section, and in G.E. Service Bulletin (990) 72-306.
....END....