New Manuals on AirCorps Library for Feb. 25th

The 26 new manuals added to AirCorps Library this week are all about the instruments. 

The new manuals for General Instrument Unit include some nice early (pre-war) Pioneer installation and operations manuals. We also have an insteresting document detailing what some aircraft instruments and accessories would have set you back in 1935. The most expensive item on the list is an Octant listed on  that cost $480.00 in 1935. Using the Federal Reserve's inflation calculator shows buying that same Octant in 2025 (the most recent data) would cost more than $11,250!

Detour over...

AirCorps Library browsers will also find new manuals added to the Automatic Pilot, Flight Instrument, Compass, and Fuel Flowmeter & Content Gages Units.

Scroll down to see all the new manuals added this week. If you missed any of the 96 new manuals we added in Februrary from the Aero Trader Warbird Restoration & Maintenance collection head to the main page of the AirCorps Library blog.

Want historic warbird manuals and AirCorps Library updates delivered to your email inbox each week? Sign up for our weekly newsletter by clicking this link.

General Instrument Manuals

Aircraft Instruments and Accessories (Carruth Laboratories), Undated

First Edition, Instruction Manual for Pioneer Instruments, 1930

Installation Instructions for Kollsman Aircraft Instruments, Undated

No. 71-16, The Y-Type Position Convectron (Eclipse-Pioneer), 1947

No. 73-3A. The Chronotron Tube (Eclipse-Pioneer), 1947

Price List of Aircraft Instruments, 15-Feb-1935

Principles and Operation of Aircraft Instruments (Pioneer), 1930

Publication No. 611-1, Pioneer Aircraft Instruments (Eclipse-Pioneer), 1946

Spare Instruments for Brewster Dutch Contract (Pioneer), Undated

Automatic Pilot Manuals

Handbook of Instructions with Parts Catalogue for the Hydraulic Surface Control for Aircraft Automatic Pilots (Jack & Heintz), Nov-1942

Handbook of Overhaul Instructions for Automatic Pilot Type C-1 (Minneapolis-Honeywell), 22-Feb-1952

Installation and Maintenance Instructions for the Type A-3A Automatic Pilot (Jack & Heintz), July-1942

PM-1, Operation and Flight Instructions for the Type A-3A Automatic Pilot (Jack & Heintz), Jan-1943

PM-3, Handbook of Overhaul Instructions for the Type A-3A Automatic Pilot (Jack & Heintz), Sept-1943

PM-4, Illustrated Parts Catalog for the Type A-3A Automatic Pilot (Jack & Heintz), Apr-1943

Flight Instrument Manuals

IM-1, Handbook of Instructions with Parts Catalog for the Model JH-5500 Directional Gyro Indicator (Jack & Heintz), Aug-1943

IM-2, Handbook of Instructions with Parts Catalog for the Model JH-6500 Gyro Horizon Indicator (Jack & Heintz), Sept-1943

No. 15-726F, The Sperry Aircraft Gyropilot Model A-2, June-1940

The Sperry Directional Gyro, Undated

Types 625 and 753 Drift Indicator (Pioneer), Undated

Compass Manuals

Installation and Operation Instructions for Gyro Stabilized Flux and Gate Compass System (Eclipse-Pioneer), 1945

Instructions for Installation of Pioneer Type 818 Compass, Undated

Type 718B Magnetic Compass (Pioneer), Undated

Type 744 Magnetic Compass (Pioneer), Undated

Type 780-B Magnetic Compass (Pioneer), Undated

Flowmeter Manuals

Form L-312, Operating Instructions for Flowmeter No. 11-1757 (Bendix-Scintilla), Apr-1949