# TCDS P-842: McCauley Propeller Systems

- Type: Type certificate data sheet
- Status: Current
- Holder: McCauley Propeller Systems
- Revision: 16
- Revised: October 26, 2006
- Product: Propeller
- Certification basis: Part 14, Part 21, Part 35, CAR 14
- Data sheet PDF: https://openairdocs.org/files/sha256/4b/04/4b04394b54f14a48b5b0139d952b25fdd5c4c1e1e096a0fa8f5b25e0ade6922d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B551B448ACFF577B8625726D0061EBDF.0001
- Page: https://openairdocs.org/tcds/P-842

## Models (4)

As the data sheet lists them.

- 1A90
- 1A135
- 1B90
- 1C90

## 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. 16 14 14 14 16 13 
 
DEPARTMENT OF TRANSPORTATION 
FEDERAL AVIATION ADMINISTRATION 
P-842 
Revision 16 
McCAULEY 
1A90 
1B90 
1C90 
1A135 
October 26, 2006
TYPE CERTIFICATE DATA SHEET NO. P-842 
 
Propellers of models described herein conforming with this data sheet (which is part of Type Certificate No. 842) and other approved data on file 
with the Federal Aviation Administration, meet the minimum standards for use in certificated aircraft in accordance with the 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. 
 
Type Certificate Holder McCauley Propeller Systems 
 7751 E. Pawnee 
Wichita, KS  67207 
 
Type Fixed pitch metal 
 
Material Aluminum Alloy 
 
No. of Blades Two 
 
 
 
   Hub Drilling  Weight (lb.)
Model 
(See Note 2) 
Maximum 
Continuous 
HP   RPM 
Takeoff 
HP   RPM Diameter 
Standard 
Pitch 
No. 
Holes 
Dia. 
Holes 
Dia.Bolt 
Circle 
Hub Dimensions 
Dia.       Thick. 
Maximum 
Diameter 
1A90/CF 85 2600 85 2600 78"-70" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1A90/CF 85 2800 85 2800 70"-66" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1A90/CF 90 2475 90 2475 78"-66" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1A90/CF 100 2750 100 2750 75"-71" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1A90/CH 85 2600 85 2600 78"-70" 68"-38" 6 25/64" 4-3/8" 5" 2-3/4" 21 
 
1A90/CH 85 2800 85 2800 70"-66" 68"-38" 6 25/64" 4-3/8" 5" 2-3/4" 21 
1B90/CM 85 2800 85 2800 70"-66" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1B90/CM 85 2600 85 2600 78"-70" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1B90/CM 90 2475 90 2475 78"-66" 68"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1B90/CM 100 2750 100 2750 75"-71" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1B90/CM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21 
1B90/CM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 21

P-842 Page 2 of 6 
 
 
 
 
   Hub Drilling  Weight (lb.)
Model 
(See Note 2) 
Maximum 
Continuous 
HP   RPM 
Takeoff 
HP   RPM Diameter 
Standard 
Pitch 
No. 
Holes 
Dia. 
Holes 
Dia.Bolt 
Circle 
Hub Dimensions 
Dia.       Thick. 
Maximum 
Diameter 
1B90/ECM 85 2600 85 2600 76"-68" 68"-38" 6 25/64" 4-3/8" 5-1/4" 3-7/8" 23** 
1B90/ECM 100 2750 100 2750 75"-71" 72"-38" 6 25/64" 4-3/8" 5-1/4" 3-7/8" 23** 
1B90/ECM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 3-7/8" 23** 
1B90/ECM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 3-7/8" 23** 
1B90/FCM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-1/4" 23.8** 
1B90/FCM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-1/4" 23.8** 
1B90/LCM 100 2750 100 2750 72"-71" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 24.0** 
1C90/LF 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 23.5* 
1C90/LM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 23.5* 
1C90/LM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 23.5* 
1C90/ALM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 25.5* 
1C90/ALM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 2-3/4" 25.5* 
1C90/CLM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 25** 
1C90/CLM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 25** 
1C90/DLM 108 2600 108 2600 76"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 25** 
1C90/DLM 115 2800 115 2800 72"-70" 72"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 25** 
1A135/RM 130 2800 130 2800 73"-68" 68"-38" 6 33/64" 4" 5-1/4" 2-7/8" 22 
1A135/JCM 130 2800 130 2800 73"-68" 68"-38" 6 25/64" 4-3/8" 5-1/4" 4" 23.8** 
1A135/KCM 130 2800 130 2800 73"-68" 68"-38" 6 25/64" 4-3/8" 5-1/4" 4-3/4" 24.1** 
1A135/BRM 130 2800 130 2800 73"-68" 68"-38" 6 33/64" 4" 5-1/4" 4" 23.8** 
 
1A135/CRM 130 2800 130 2800 73”-68” 68”-38”  6 33/64” 4” 5-1/4” 4” 23.8** 
1A135/DRM 130 2800 130 2800 73”-68” 68”-38”  6 33/64” 4” 5-1/4” 4” 23.8 
 
* Weight includes a separate and loose adapter 
** Weight includes integral doweled spacer 
________________________________________________________________________________________________________
________

P-842 Page 3 of 6 
 
 
Certification Basis: Models 1A90/CF, 1A90/CH, 1B90/CM, 1C90/LF, and 1C90/LM: 
  Civil Air Regulations Part 14 effectiv e October 19, 1945, with Amendment 14-1  
  thereto. 
 Model 1C90/ALM: 
  14 CFR Part 35 with Amendment 35-1 thereto. 
 Model 1A135/CRM: 
14 CFR Part 35 with Amendments 35-1, 35-2, 35-3, 35-4, 35-5 and 35-6 thereto. 
 All other Models: 
  14 CFR Part 35 with Amendments 35-1 and 35-2 thereto. 
 Type Certificate No. 842 issued April 18,  1946.  The following models were approved 
 under Delegation Option Authorization Pro cedures of 14 CFR Part 21 Subpart J: 
 
   
1C90/ALM approved November 1, 1965 
1B90/CLM approved March 8, 1969  
1B90/DLM approved July 10, 1969  
1B90/ECM approved March 8, 1969  
1B90/FCM approved December 11, 1969  
1A135/RM approved March 26, 1971  
1A135/JCM approved March 26, 1971  
1A135/BRM approved September 9, 1971  
1A135/KCM approved April 14, 1972  
1B90/LCM approved May 1, 1972  
1A135/CRM approved July 23, 1998 
1A135/DRM approved March 26, 1999 
 
 
 Date of Application for Type Certificate December 10, 1945. 
 
Production Basis: Production Certificate No. 3 
 
NOTE 1. Installation .  The model 1A90/CH propeller is to be assembled only with the Continental Motors tapered  
 crankshaft hub detail No. 3745.  The propeller nut a nd snap ring, Continental Part Numbers 21202 and  
 21203 are also used.  The model 1A90/CF and 1B90/CM propellers are equally adaptable to the Continental 
 tapered crankshaft (CMC 3745 hub) or the flanged crankshaft (SAE No. 1) using bushings A-1170 as  
 required.  The model 1C90/LF and 1C90/LM propelle rs are eligible only with McCauley adapter C-1210 
 which permits installation on an SAE No. 2 flange. 
 
 Bolts, nuts and front plates furnished by the engi ne manufacturer are not to be used.  The propeller 
 manufacturer will furnish the necessary bolts, bushings and adapters or spacers as needed for the desired 
 installation.  See NOTE 2 for in stallation drawing requirements. 
 
NOTE 2. Propeller Model Designation .   The propeller model designation consists of a series of numbers suffixed to 
 the basic design number to indicate propeller diameter a nd geometric pitch at the .75 radius.  For example: 
  
   
   Basic Model Designation 
 
   Suffix 
 
 ** 
1A90   /   CH      72     40 
     
   
 
     
 
    
   
   
 
 
 
 
NOTE 2. (Cont’d) 
Inches pitch at .75 radius  
Propeller diameter in inches 
 Denotes hub and blade tip configuration* 
  Basic design number

P-842 Page 4 of 6 
 
 
           *CH  designates assembly  with Continental hub; elliptical tip blades. 
 CF designates installation on SAE No. 1 flanged shaft, elliptical tip blades. 
 CM designates installation on SAE No. 1 flanged shaft, square tip blades. 
 LF designates installation on SAE No. 2 flanged shaft with McCauley P/N C-1210 adapter in 
   accordance with McCauley Draw ing C-1211, elliptical tip blades. 
 LM designates installation on SAE No. 2 flanged shaft with McCauley P/N C-1210 adapter in 
   accordance with McCauley Drawing C-1211, square tip blades. 
 RM designates installation on special 4.0 in. bolt circle flange with six on-half in. diameter 
   mounting bolts in accordance with McCa uley Drawing C-4390, square tip blades. 
 ALM designates installation on SAE No. 2 flange d shaft with McCauley P/N C-3635 adapter in 
   accordance with McCauley Drawing C-3636, square tip blades.  
 CLM designates installation on SAE No. 2 fla nged shaft with McCauley P/N C-3515 spacer in 
   accordance with McCauley Drawing C-3518, square tip blades.  
 DLM designates installation on SAE No. 2 fla nged shaft with McCauley P/N B-4160 spacer in 
   accordance with McCauley Drawing C-3518, square tip blades.  
 ECM designates installation on SAE No. 2 fla nged shaft with McCauley P/N B-3927 spacer in 
   accordance with McCauley Drawing B-3929, square tip blades.  
 FCM designates installation on SAE No. 2 modified flange d shaft with McCauley P/N C-4301 spacer in accordance with 
McCauley Drawing B-4302, square tip blades.  
 JCM designates propeller with McCauley P/N B- 3927 integral doweled spacer, installation on SAE 
   No. 1 flanged shaft in accordance with McCauley Drawing B-4387, square tip blades. 
 KCM designates propeller with McCauley P/N B- 4446 integral doweled spacer, installation on SAE 
   No. 1 flanged shaft in accordance with McCauley Drawing B-4445, square tip blades. 
 LCM designates installation on SAE No. 1 fla nged shaft with McCauley P/N B-3400 spacer in 
   accordance with McCauley Drawing B-3401, square tip blades. 
 BRM designates propeller with Mc Cauley P/N B-3718 integral doweled spacer, installation on special 
   4.0 inch bolt circle with six one-half inch diameter mounting bolts in accordance with McCauley 
   Drawing C-4411, square tip blades. 
 CRM designates propeller with McCauley in tegral doweled spacer P/N B-3718, installation on special 4.0” bolt circle with six 
one-half inch diameter mounting bolts in accordance with McCauley Drawing C-7577, square tip blades. 
 DRM  designates propeller with McCauley P/N B-7639 integral doweled spacer , installation on special 4.0” bolt circle with six 
one-half inch diameter mounting bolts in accordance with McCauley Drawing C-7640, square tip blades 
 
  ** Some propellers of these models may have  been produced with a hyphen following the basic 
   design number in lieu of a diagonal line, i.e., “1A90-CH7240”. 
 
NOTE 3.  Pitch Control.   Not applicable. 
  
NOTE 4.  Feathering.   Not applicable. 
 
NOTE 5.  Left Hand Models.   Not applicable. 
 
NOTE 6.  Interchangeable blades.   Models 1A90 series and 1B90-CM, or 1C90-ALM and 1C90-CLM are sufficiently 
  similar aerodynamically and vibrati onwise to permit interchangeability in the same diameter and static r.p.m. 
  without a flight test.   
 
NOTE 7.  Accessories.   Not applicable. 
 
NOTE 8.  Shank Fairings.   Not applicable.

P-842 Page 5 of 6 
 
 
NOTE 9.  Special Limits.  
 
Table of Propeller-Engine Combinations 
Approved Vibrationwise for Use on Normal Category Single-Engine Aircraft 
 
 The maximum and minimum propeller diameters that can  be used from a vibration standpoint are shown  
 below.  No reduction below the minimum diameter listed is permissible since this figure includes the 
 diameter reduction allowable for repair purposes. 
 
 Propeller 
Model 
Engine 
Model 
Max. Dia. 
(Inches) 
Min. Dia. 
(Inches) 
 
Placards 
      
 
 
or 
1A90/CF 
1A90/CH 
1B90/CM 
Continental A-65 76 69 ½ None 
 
 
 
or 
 
1A90/CF 
1A90/CH 
1B90/CM 
 
Continental A-75 
 
71 
 
68 ½ 
 
None 
 
 
 
or 
 
1A90/CF 
1A90/CH 
1B90/CM 
 
Continental C-75 
 
74 
 
69 ½ 
 
None 
 
 
 
or 
 
1A90/CF 
1A90/CH 
1B90/CM 
 
Continental A-80 
 
70 
 
68 ½ 
 
None 
 
 
 
 
or 
 
1A90/CF 
1A90/CH 
1B90/CM 
1B90/ECM 
 
Continental C-85 series, 
85 hp and 2575 r.p.m. or 
less 
 
71 
 
68 ½ 
 
 
None 
 
 
 
or 
 
1A90/CF 
1A90/CH 
1B90/CM 
 
Continental C-90 
 
73 
 
69 ½ 
 
None 
 
 
 
 
 
 
 
 
 
1C90/LM 
1C90/ALM 
1C90/CLM 
1C90/DLM 
1B90/CM 
1B90/ECM 
1B90/FCM 
 
Lycoming O-235 series 
6.75 to 1 compression ratio 
or less, 108 hp. @ 2600 
r.p.m. or less 
 
73 
 
70 
 
None 
 
 
 
 
or 
 
1A90/CF 
1B90/CM 
1B90/ECM 
1B90/LCM 
 
Continental O-200 series 
up to 100 hp. @ 2750 
r.p.m. 
 
75 
 
71 
 
None 
 
 
 
 
 
 
 
 
 
1B90/CM 
1B90/ECM 
1B90/FCM 
1C90/LM 
1C90/ALM 
1C90/CLM 
1C90/DLM 
 
Lycoming O-235 series 
6.75 to 1 compression ratio 
or less, 115 hp. @ 2800 
r.p.m. or less 
 
72 
 
70 
 
None

P-842 Page 6 of 6 
 
 
 
      
 Propeller 
Model 
Engine 
Model 
Max. Dia. 
(Inches) 
Min. Dia. 
(Inches) 
 
Placards 
 
 
or 
 
1A135/RM 
1A135/BRM 
 
Rolls Royce O-240 
Series up to 130 hp. @ 
2800 r.p.m. 
 
72 
 
71 
 
“Avoid continuous 
operation in full 
throttle climb above 
2700 r.p.m. and in 
cruising above 75% 
power setting.” 
    
71 
 
70 
 
None 
    
70 
 
69 
 
“Avoid continuous 
operation while 
descending between 
2150 and 2350 r.p.m. 
with power retarded 
below ¼ throttle 
setting” 
 
 
or 
 
1A135/JCM 
1A135/KCM 
 
Lycoming O-235 series up 
to 125 hp. @ 2800 r.p.m. 
 
71 
 
70 
 
“Avoid continuous 
operation while 
descending between 
2025 and 2325 r.p.m. 
with power retarded 
below ¼ throttle 
setting” 
    
70 
 
69 
 
“Avoid continuous 
operation while 
descending between 
2075 and 2400 
r.p.m. with power 
retarded below ¼ 
throttle setting” 
  
1A135/JCM 
 
Lycoming O-235 series 
6.75:1 compression ratio 
up to 115 hp @ 2800 r.p.m. 
 
72 
 
69 
 
None 
 
 
NOTE 10.  Special Notes.  The word “e ligible” as used herein does not signify approval.  For approval, compliance 
  with the applicable aircraft ai rworthiness requirements is necessary. 
 
 
…END…
```

## ADs (2, in force first)

- [AD 2005-14-11](https://openairdocs.org/ad/2005-14-11): Failed propeller blade · Hartzell Propeller BHC-92W, BHC-92ZF-1, BHC-92ZF-3 and 391 more. Effective Aug 17, 2005
- [AD 2003-13-17](https://openairdocs.org/ad/2003-13-17): Propeller blade · Hartzell Propeller BHC-A2V, BHC-C2Y, EHC-G3YF-2 and 81 more. Effective Jul 18, 2003

## STCs approved under this data sheet (2)

- [STC SP01222WI](https://openairdocs.org/stc/SP01222WI): Installation of Aircraft Development propeller vortelators.. Aircraft Development Co
- [STC SP00582NY](https://openairdocs.org/stc/SP00582NY): Installation of Prop-Guard Polyurethane Protective Tape on the leading edge of metal propellers.. McFarlane Aviation, Inc.

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