Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog
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Comprehensive factory illustrated parts catalog for the Piper PA-23-250 Aztec and PA-23-235 Apache series, covering airframe components, landing gear, control linkages, instrumentation, and systems with exploded drawings, part numbers, and serial applicability.
Description
Complete Factory Illustrated Parts Breakdown for Piper PA-23 Aircraft
The Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog provides airframe and powerplant mechanics, restoration specialists, and aircraft owners with an exhaustive visual reference and part-number identification source for Piper PA-23 series twin-engine aircraft. Published under Piper Aircraft Corporation publication number 753 522 and revised through July 1984, this catalog delivers complete exploded-view diagrams, part nomenclatures, sub-assembly indention structures, quantities required per assembly, and exact serial-number applicability across the production run of both the PA-23-235 Apache and all six-place PA-23-250 Aztec variants.
File Details
- Manual Type: Illustrated Parts Catalog
- Brand: Piper Aircraft Corporation
- Applicable Models:
- PA-23-235 Apache
- PA-23-250 Aztec
- PA-23-250 (Six Place) Aztec (Models B, C, D, E, and F)
- Publication Part Number: 753 522 (PR840712)
- Original Issue Date: August 15, 1972
- Revision Date: Revised July 1984
- Language: English
- Page Count: 684 pages
- File Format: Portable Document Format (PDF)
Serial Number & Model Applicability
This Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog contains precise serial-effectivity listings essential for locating the correct original equipment parts, interchangeable revisions, and optional equipment installations across the following production series:
- 1960 Aztec PA-23-250: Serial numbers 27-1 through 27-366 inclusive
- 1961 Aztec PA-23-250: Serial numbers 27-367 through 27-504 inclusive
- Apache PA-23-235: Serial numbers 27-505 through 27-622 inclusive
- Aztec PA-23-250 (Six Place) Model B: Serial numbers 27-2000 through 27-2504 inclusive
- Aztec PA-23-250 (Six Place) Model C: Serial numbers 27-2505 through 27-3836 inclusive, and 27-3838 through 27-3943 inclusive
- Aztec PA-23-250 (Six Place) Model D: Serial numbers 27-3837, 27-3944 through 27-4425 inclusive, and 27-4427 through 27-4573 inclusive
- Aztec PA-23-250 (Six Place) Model E: Serial numbers 27-4426, 27-4574 through 27-7554168 inclusive
- Aztec PA-23-250 (Six Place) Model F: Serial numbers 27-7654001 and up
Parts Catalog Organization & Code Structure
Every group in the Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog is structured to ensure positive, error-free identification of replacement components. Listings are organized across six functional columns:
- Figure and Index Number: Cross-references each listed item directly to its corresponding detailed engineering illustration.
- Part Number: Shows the exact Piper part number required for requisitions and ordering.
- Code: Identifies specialized notes, optional equipment conditions, voltage configurations (14-volt or 28-volt), and specific airframe modifications.
- Nomenclature: Displays the approved part title, with indentation levels using asterisks to illustrate parent-assembly and sub-component relationships.
- No. Req.: Indicates the total quantity utilized per installation or within that specific sub-assembly.
- Serial Numbers Affected: Pinpoints the exact airframe serial boundaries for part changes, service kit installations, and factory improvements.
- Attaching Parts: Standard AN and MS commercial hardware specifications (bolts, washers, nuts, and clevis pins) are itemized directly following the main assemblies they secure.
Chapters Covered
- Section I — Wing Group
- Wing Installation
- Flap Assembly and Aileron Assembly
- Wing and Wing Tip Construction
- Wing and Wing Tip Skin
Complete PDF Bookmark TreeComplete Bookmarks
The complete bookmarks in the “Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog” are as follows:
+753-522 – AZTEC PARTS CATALOG – PA-23-235 APACHE, PA-250 AZTEC, PA-23-250 (SIX PLACE) AZTECp. 1
AEROFICHE EXPLANATION AND REVISION STATUSp. 2INTRODUCTIONp. 3TABLE OF CONTENTSp. 8FIGURE 1. VIEW OF COMPLETE AIRPLANEp. 13+SECTION I – WING GROUPp. 14
FIGURE 2. WING INSTALLATIONp. 14FIGURE 2A. FLAP ASSEMBLY AND AILERON ASSEMBLYp. 19FIGURE 3. WING AND WING TIP CONSTRUCTIONp. 24FIGURE 4. WING AND WING TIP SKINp. 31+SECTION II – FUSELAGE GROUPp. 35
FIGURE 5. COMPLETE FUSELAGEp. 35FIGURE 6. FUSELAGE FORWARD SECTION (PA-23-235, PA-23-250)p. 38FIGURE 6A. FUSELAGE FORWARD SECTION (PA-23-250(6))p. 43FIGURE 7. FUSELAGE CENTER SECTIONp. 53FIGURE 7A. FUSELAGE BOTTOM FAIRINGp. 60FIGURE 8. FUSELAGE AFT SECTIONp. 64FIGURE 9. FUSELAGE FRAMEp. 72FIGURE 10. INSTRUMENT PANEL INSTALLATION (PA-23-235/250/250(6))p. 76FIGURE 10A. INSTRUMENT PANEL INSTALLATION (PA-23-250(6))p. 87FIGURE 10B. INSTRUMENT PANEL INSTALLATION (PA-23-250(6))p. 97FIGURE 10C. INSTRUMENT PANEL INSTALLATION (PA-23-250(6))p. 102FIGURE 10D. DUAL INSTRUMENT PANEL INSTALLATION (PA-23-250(6))p. 107FIGURE 10E. DUAL INSTRUMENT PANEL INSTALLATION (PA-23-250(6))p. 111FIGURE 10F. DUAL INSTRUMENT LINES AND RIGHT PITOT STATIC SYSTEM INSTALLATIONp. 114FIGURE 11. CONTROL PEDESTAL INSTALLATIONp. 116FIGURE 12. FLOORBOARD AND COCKPIT FINISHING INSTALLATION (PA-23-235/250/250(6))p. 122FIGURE 12A. COCKPIT FINISHING INSTALLATION (PA-23-250(6))p. 142FIGURE 12B. FLOORBOARD INSTALLATION (PA-23-250(6))p. 152FIGURE 13. WINDOW CURTAINS INSTALLATIONp. 156FIGURE 14. FUSELAGE ENCLOSURE INSTALLATIONp. 160FIGURE 15. BAGGAGE DOOR ASSEMBLY AND CABIN DOOR ASSEMBLY (PA-23-235/250/250(6))p. 168FIGURE 15A. BAGGAGE DOOR ASSEMBLY AND CABIN DOOR ASSEMBLY (PA-23-250(6))p. 177FIGURE 16. OXYGEN SYSTEM INSTALLATION (PA-23-250)p. 181FIGURE 16A. OXYGEN SYSTEM INSTALLATION (PA-23-250(6))p. 184FIGURE 16B. OXYGEN SYSTEM INSTALLATION (PA-23-250(6))p. 187FIGURE 16C. OXYGEN SYSTEM INSTALLATION (PA-23-250(6))p. 190FIGURE 17. SEATS INSTALLATION (PA-23-235/250/250(6))p. 193FIGURE 17A. SEATS INSTALLATION (PA-23-250(6))p. 208FIGURE 17B. SEATS INSTALLATION (PA-23-250(6))p. 217FIGURE 18. VACUUM PUMP INSTALLATION (PA-235/250/250(6))p. 222FIGURE 18A. VACUUM PUMP INSTALLATION (PA-23-250(6))p. 227FIGURE 19. AIRSPEED, STATIC, OIL PRESSURE AND MANIFOLD PRESSURE LINESp. 231FIGURE 20. VENTILATING SYSTEM INSTALLATION (PA-23-235/250/250(6))p. 236FIGURE 20A. VENTILATING SYSTEM INSTALLATION (PA-23-250(6))p. 239FIGURE 20B. VENTILATING SYSTEM INSTALLATION (PA-23-250(6))p. 242FIGURE 21. HEATER INSTALLATION (PA-23-235/250/250(6))p. 244FIGURE 21A. HEATER INSTALLATION (PA-23-250(6))p. 248FIGURE 22. HEATER ASSEMBLY (STEWART WARNER)p. 252+SECTION II – FUSELAGE GROUPp. 260
FIGURE 22A. JANITROL HEATER ASSEMBLYp. 260FIGURE 22B. JANITROL HEATER COMPONENTSp. 264+SECTION III – CHASSIS GROUPp. 267
FIGURE 23. GEAR STRUT ASSEMBLIESp. 267FIGURE 24. NOSE GEAR INSTALLATIONp. 270FIGURE 24A. NOSE WHEEL ASSEMBLYp. 275FIGURE 25. MAIN GEAR INSTALLATIONp. 278FIGURE 26. MAIN WHEEL ASSEMBLYp. 282FIGURE 27. BRAKE INSTALLATIONp. 284FIGURE 27A. DUAL BRAKE INSTALLATIONp. 287FIGURE 28. BRAKE ASSEMBLYp. 290+SECTION IV – TAIL SURFACES GROUPp. 293
FIGURE 29. TAIL INSTALLATIONp. 293FIGURE 29A. STABILATOR ASSEMBLY (PA-23-235/250/250(6))p. 297FIGURE 29B. STABILATOR ASSEMBLY (PA-23-250(6))p. 299FIGURE 29C. RUDDER ASSEMBLYp. 302FIGURE 29D. FIN ASSEMBLYp. 305+SECTION V – POWER PLANT GROUPp. 308
FIGURE 30. POWER PLANT INSTALLATION (PA-23-235/250/250(6))p. 308FIGURE 30A. POWER PLANT INSTALLATION (PA-23/250(6))p. 311FIGURE 30B. TURBOCHARGER INSTALLATION (AIRESEARCH)p. 316FIGURE 30C. TURBOCHARGER INSTALLATION (LYCOMING)p. 318FIGURE 31. PROPELLER (PA-23-235/250/250(6))p. 323FIGURE 31A. PROPELLER (PA-23-250(6))p. 326FIGURE 31B. PROPELLER SYNCHRONIZER SYSTEM INSTALLATIONp. 330FIGURE 31C. PROPELLER SYNCHROPHASER SYSTEM INSTALLATIONp. 332FIGURE 32. ENGINE BAFFLE INSTALLATIONp. 334FIGURE 33. EXHAUST COLLECTORS INSTALLATION (PA-23-235/250/250(6))p. 337FIGURE 33A. EXHAUST SYSTEM INSTALLATION (PA-23-250(6))p. 339FIGURE 34. NACELLE INSTALLATION (PA-23-235/250/250(6))p. 341FIGURE 34A. NACELLE INSTALLATION (PA-23-250(6))p. 345FIGURE 34B. NACELLE INSTALLATION (LYCOMING TURBOCHARGER)p. 352+SECTION VI – FUEL SYSTEM GROUPp. 357
FIGURE 35. FUEL SYSTEM INSTALLATION (PA-23-235/250/250(6))p. 357FIGURE 35A. FUEL INJECTION SYSTEM INSTALLATION (PA-23-250(6))p. 364FIGURE 35B. FUEL SYSTEM INSTALLATION (PA-23-250(6))p. 368FIGURE 36. FUEL CELL INSTALLATION (PA-23-235/250/250(6))p. 374FIGURE 36A. FUEL CELL INSTALLATION (PA-23-250(6))p. 378FIGURE 36B. WING TIP FUEL TANK INSTALLATION (PA-23-250(6))p. 381FIGURE 37. FUEL SYSTEM CONTROL BOX (PA-23-235/250/250(6))p. 383FIGURE 37A. FUEL SYSTEM CONTROL BOX (PA-23-250(6))p. 387+SECTION VII – ELECTRICAL SYSTEM GROUPp. 390
FIGURE 38. FUSELAGE ELECTRICAL SYSTEM INSTALLATION (PA-23-235/250)p. 390FIGURE 38A. FUSELAGE ELECTRICAL SYSTEM INSTALLATION (PA-23-250(6))p. 393FIGURE 38B. WING ELECTRICAL SYSTEM INSTALLATION (PA-23-235/250)p. 399FIGURE 38C. WING ELECTRICAL SYSTEM INSTALLATION (PA-23-250(6))p. 402FIGURE 38D. BATTERY BOX INSTALLATION (PA-23-235/250)p. 406FIGURE 38E. BATTERY BOX INSTALLATION (14-VOLT) (PA-23-250(6))p. 408FIGURE 38F. BATTERY BOX INSTALLATION (28-VOLT) (PA-23-250(6))p. 411FIGURE 38G. BATTERY BOX INSTALLATION (28-VOLT) (PA-23-250(6))p. 414FIGURE 39. PEDESTAL ELECTRICAL INSTALLATIONp. 416FIGURE 39A. INSTRUMENT PANEL ELECTRICAL INSTALLATION (PA-23-235/250/250(6))p. 419FIGURE 39B. INSTRUMENT PANEL ELECTRICAL INSTALLATION (PA-23-250(6))p. 423FIGURE 39C. INSTRUMENT PANEL ELECTRICAL INSTALLATION (PA-23-250(6))p. 426FIGURE 40. TAXI LIGHT INSTALLATIONp. 430FIGURE 40A. STROBE LIGHTS INSTALLATIONp. 432FIGURE 41. EXTERNAL POWER SUPPLY (PA-23-235/250/250(6))p. 435FIGURE 41A. EXTERNAL POWER SUPPLY (PA-23-250(6))p. 438FIGURE 42. PROPELLER DEICER INSTALLATION (PA-23-250)p. 440FIGURE 42A. PROPELLER DEICER INSTALLATION (PA-23-250(6))p. 442FIGURE 42B. PNEUMATIC DEICER INSTALLATION (B. F. GOODRICH)p. 445FIGURE 42C. PNEUMATIC DEICER INSTALLATION (B. F. GOODRICH)p. 451FIGURE 42D. PNEUMATIC DEICER INSTALLATION (AIRBORNE/GOODYEAR) (PA-23-250(6))p. 455+SECTION VIII – HYDRAULIC SYSTEM GROUPp. 459
FIGURE 43. HYDRAULIC SYSTEM INSTALLATION (PA-23-235/250/250(6))p. 459FIGURE 43A. FUSELAGE HYDRAULIC SYSTEM INSTALLATION (PA-23-250(6))p. 465FIGURE 43B. WING HYDRAULIC SYSTEM INSTALLATION (PA-23-250(6))p. 469FIGURE 43C. HYDRAULIC SYSTEM COMPONENTS (PA-23-250(6))p. 472FIGURE 44. LANDING GEAR ANTI-RETRACTION VALVE INSTALLATIONp. 476FIGURE 45. HYDRAULIC POWERPAK COMPONENTSp. 478FIGURE 45A. HYDRAULIC POWERPAK COMPONENTSp. 482FIGURE 46. EMERGENCY GEAR EXTENDER INSTALLATION (PA-23-235/250/250(6))p. 485+SECTION IX – CONTROL SYSTEM GROUPp. 488
FIGURE 47. ENGINE CONTROLS INSTALLATIONp. 488FIGURE 48. STABILATOR CONTROL INSTALLATIONp. 491FIGURE 49. AILERON CONTROLS INSTALLATIONp. 494FIGURE 50. RUDDER CONTROL INSTALLATIONp. 497FIGURE 51. TAIL TRIM MECHANISM INSTALLATIONp. 500FIGURE 51A. TRIM TAB INTERCONNECT SYSTEM INSTALLATIONp. 506+SECTION X – ELECTRONICS GROUPp. 513
FIGURE 52. COLLINS AND ARC RADIO INSTALLATIONp. 513FIGURE 53. RADIO JUNCTION BOXES (PA-23-235/250/250(6))p. 517FIGURE 54. RADIO JUNCTION BOXES (PA-23-250(6))p. 521FIGURE 54A. RADIO JUNCTION BOXES (14-VOLT) (PA-23-250(6))p. 523FIGURE 54B. RADIO JUNCTION BOXES (28-VOLT) (PA-23-250(6))p. 525FIGURE 55. ALL WEATHER ANTENNA INSTALLATIONp. 527FIGURE 55A. PIPER AUTOMATIC LOCATOR (ELT) INSTALLATION (GARRETT MFG. LTD)p. 529FIGURE 55B. PIPER AUTOMATIC LOCATOR (ELT) INSTALLATION (COMMUNICATIONS COMPONENTS CORP)p. 531FIGURE 55C. PIPER AUTOMATIC LOCATOR (ELT) INSTALLATION (NARCO AVIONICS)p. 533FIGURE 56. PIPER PM-1 MARKER BEACON INSTALLATION (PA-23-250(6))p. 535FIGURE 57. AUTOCONTROL I INSTALLATIONp. 538FIGURE 58. AUTOCONTROL II INSTALLATIONp. 541FIGURE 59. AUTOCONTROL III INSTALLATION (PA-23-250(6))p. 544FIGURE 59A. AUTOCONTROL III B INSTALLATION (PA-23-250(6))p. 546FIGURE 60. ALTIMATIC PILOT I INSTALLATIONp. 548FIGURE 61. ALTIMATIC PILOT II INSTALLATIONp. 551FIGURE 61A. ALTIMATIC PILOT III AND III B INSTALLATIONp. 556FIGURE 62. ALTIMATIC PILOT II B-1 INSTALLATIONp. 560FIGURE 63. ALTIMATIC PILOT III C INSTALLATION (PA-23-250(6))p. 563FIGURE 64. ALTIMATIC X F/D AUTOPILOT INSTALLATION (PA-23-250(6))p. 567FIGURE 65. ALTIMATIC X AUTOPILOT INSTALLATION (PA-23-250(6))p. 570FIGURE 66. ALTIMATIC V F/D AND V F/D-1 AUTOPILOT INSTALLATION (PA-23-250(6))p. 573FIGURE 67. ALTIMATIC V AND V-1 AUTOPILOT INSTALLATION (PA-23-250(6))p. 579FIGURE 68. AUTOPILOT/FLIGHT DIRECTOR INSTALLATION (BENDIX FCS-810) (PA-23-250(6))p. 583FIGURE 69. AUTOPILOT INSTALLATION (BENDIX FCS-810) (PA-23-250(6))p. 586FIGURE 69A. KING AUTOPILOT (KAP-200) AND KING AUTOPILOT F/D (KFC-200) INSTALLATIONp. 589FIGURE 70 .RADAR ALTIMETER INSTALLATION (PA-23-250(6))p. 591FIGURE 71. GLIDE SLOPE COUPLER INSTALLATION (PA-23-250(6))p. 593FIGURE 72. RADIO MAGNETIC INDICATOR INSTALLATION (PA-23-250(6))p. 595FIGURE 73. KING RADAR INSTALLATION (KWX-40) (PA-23-250(6))p. 597FIGURE 74. BENDIX RADAR INSTALLATION (RDR-150) (PA-23-250(6))p. 599FIGURE 75. ENCODING ALTIMETER INSTALLATION (PA-23-250(6))p. 602RADIO INSTALLATION AND WIRING DIAGRAM DRAWINGSp. 604+SECTION XI – MISCELLANEOUS GROUPp. 613
OPTIONAL EQUIPMENT KITS, REPAIR KITS AND SPECIAL TOOLSp. 613DECALSp. 619NUMERICAL INDEXp. 627 - Section II — Fuselage Group
- Complete Fuselage
- Fuselage Forward Section (PA-23-235 and PA-23-250)
- Fuselage Forward Section (PA-23-250 Six Place)
- Fuselage Center Section
- Fuselage Bottom Fairing
- Fuselage Aft Section
- Fuselage Frame Assembly
- Instrument Panel Installation (Serial Nos. 27-1 to 27-3836, 27-3838 to 27-3943)
- Instrument Panel Installation (Serial Nos. 27-3837, 27-3944 to 27-7305234)
- Instrument Panel Installation (Serial Nos. 27-7305222, 27-7405235 to 27-7405476)
- Instrument Panel Installation (Serial Nos. 27-7554001 and up)
- Dual Instrument Panel Installation (Serial Nos. 27-7405235 to 27-7405476)
- Dual Instrument Panel Installation (Serial Nos. 27-7554001 and up)
- Dual Instrument Lines and Right Pitot Static System Installation
- Control Pedestal Installation
- Floorboard and Cockpit Finishing Installation
- Window Curtains Installation
- Fuselage Enclosure Installation
- Baggage Door Assembly and Cabin Door Assembly
- Oxygen System Installation
- Seats Installation
- Vacuum Pump Installation
- Airspeed, Static, Oil Pressure and Manifold Pressure Lines
- Ventilating System Installation
- Heater Installation & Stewart Warner / Janitrol Heater Assemblies
- Section III — Chassis Group
- Gear Strut Assemblies
- Nose Gear Installation & Nose Wheel Assembly
- Main Gear Installation & Main Wheel Assembly
- Brake Installation, Dual Brake Installation & Brake Assembly
- Section IV — Tail Surfaces Group
- Tail Installation
- Stabilator Assembly
- Rudder Assembly & Fin Assembly
- Section V — Power Plant Group
- Power Plant Installation
- Turbocharger Installation (Airesearch and Lycoming)
- Propeller & Governor Linkages
- Propeller Synchronizer & Synchrophaser Systems
- Engine Baffles, Exhaust Collectors & Nacelle Installations
- Section VI — Fuel System Group
- Fuel System & Fuel Injection System Installations
- Fuel Cell Installation & Wing Tip Fuel Tank Installation
- Fuel System Control Box
- Section VII — Electrical System Group
- Fuselage and Wing Electrical Wiring Installations
- Battery Box Installations (14-Volt and 28-Volt)
- Pedestal and Instrument Panel Electrical Harnesses
- Lighting Systems (Taxi, Strobe, Post, and Glar-Ban)
- External Power Supply & Deicer Systems (Propeller and Pneumatic)
- Section VIII — Hydraulic System Group
- Hydraulic Powerpak Components & System Installations
- Wing and Fuselage Hydraulic Plumbing
- Landing Gear Anti-Retraction Valve & Emergency Gear Extender
- Section IX — Control System Group
- Engine Controls, Pedestal Levers, and Push-Pulls
- Stabilator, Aileron, and Rudder Cable Control Systems
- Tail Trim Mechanism & Trim Tab Interconnect System
IMAGES PREVIEW
- Section X — Electronics Group
- Avionics Installations (Collins, ARC, King, Narco, and Bendix)
- Radio Junction Boxes (14V and 28V) & Antennas
- Emergency Locator Transmitter (ELT) Installations
- Autopilot Systems (AutoControl I, II, III, IIIB; AltiMatic I, II, III, IIIB-1, IIIC, V, V F/D, X)
- Flight Director, Weather Radar, and Encoding Altimeter Installations
- Section XI — Miscellaneous Group
- Optional Equipment Kits, Repair Kits, Special Service Tools, and Airframe Decals
- Complete Numerical Part Number Index
For aircraft technicians, airframe and powerplant mechanics, and restoration shops, having the complete Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog provides the definitive factory record of every individual casting, bracket, structural rib, plumbing line, and piece of hardware across the airframe. By detailing exact part numbers alongside clear exploded structural views, this catalog eliminates guesswork when sourcing replacement components, verifying airframe serial effectivity, confirming hardware specifications, and disassembling or reassembling complex mechanical linkages.
Essential Parts Reference for Maintenance and Maintenance Compliance
Working on multi-engine aircraft demands absolute adherence to certified parts standards. This Piper Aztec PA-23-250 & Apache PA-23-235 Illustrated Parts Catalog enables technicians and owners to verify component authenticity, trace part supersessions, cross-reference AN and MS attachment hardware, and accurately execute airframe repairs, annual inspections, and structural rebuilds. Delivered as an instant high-quality digital PDF download, this manual is immediately accessible on desktop computers, workshop laptops, and tablets in the hangar, and allows individual pages or entire sections to be printed on demand for hands-on reference at the aircraft.
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