Circulars were instituted in September 1940 as a means of communicating
information throughout the by now far-flung branches of the Department.
The Monthly Circulars were continued until December 1950 when they
were replaced by Administrative Instructions.
indexes list noteworthy entries only - minor administrative matters are
Circular No.17 January 1942
Licences and certificates in force as at 31 Dec 1941
Road to Victory
An open letter to the people of Australia from the Prime Minister Hon
John Curtin M.P.
- Contd from December issue
Detailed explanation of how the visibility of Aerodromes and their attendant
structures may be reduced. For example: Detection range reduced from 30
miles plus to around 10 miles
Introduction of Daylight Saving time to Australia
Flying Boat Service
Commonwealth Government assumes control of all bookings of outward passengers
and freight, to ensure maximum efficient use of available space
Circular No.8 February 1942
- Rope, String etc
Shortage of fibre requires hoarding and re-use of all types of Rope cordage,
Provision of shelters and protection of personnel and buildings at Aerodromes
and Flying Boat Bases.
American Airways Expansion
Pan Am expands route structure in West Indies, South America, Africa and
Aircraft Fabric attachment Method
Bell system using thin retainer strips and extrusions in the rib construction.
Du Pont system, which greatly enhances productivity in Aircraft construction.
Enables riveting of metal skins to be completed from one side of the sheet.
on the Lead Acid Accumulator and its Maintenance
Detailed notes on the theory of operation and charging of Lead Acid Accumulators.
Circular No.19 March 1942
- A.B. Corbett
Exhortation to staff to meet the challenge posed by the times.
and Forced Landings
Actions to be taken by Departmental Staff.
Resins as Aircraft Construction Materials
Suitability and advantages of Resins.
Army Wind Tunnel
Description of new facility.
Detailed explanation of advantages, disadvantages and use and maintenance.
Circular No.20 April 1942
- A.B. Corbett
Contempt for the selfishness and idleness shown by some Australians. The
changing situation after the Japanese attack on Pearl Harbour and advance
southwards towards Australia. The devotion to duty shown by staff during
the bombing of Darwin and the evacuation of population from affected areas.
Emergency - Duties of Civil Aviation Staff
Training of staff in civil defence duties and first aid. Instructions
in the event of invasion of Australia.
and use of Stirrup Pumps
Establishment, suppliers nationwide and instructions for the use of.
of a Douglas - J.L.Watkins Senior Aeronautical Engineer
Service history of Douglas DC2 Ser No.1292 that started life as a commercial
transport aircraft with Eastern Airlines in the USA completing 16000 hours
in this role. It was freighted to Australia during the war and was converted
to a military transport. Detailed description of the engineering exercise
Boeing Flying Fortress
Description of this type newly arrived in Australia.
of unexploded munitions
Instructions to Officers in charge as to types of ordnance, reporting,
and procedures to be followed.
Circular No.21 May 1942
Lands surrounding principal civil Aerodromes proclaimed defence areas.
Responsibility of senior departmental officer to ensure relevant regulations
speed Oil engines
Description of the Diesel engine and principle of operation.
of Population of Mainland of New Guinea
The Administrator issues instructions for the evacuation of white women
and children. Interesting story of the evacuation by air from outstations
to Port Moresby and later by air and foot of white Males and Chinese as
the Japanese attacked. Subsequent Evacuation to Australia.
Gas - Use of Wheat as fuel
Superiority of Wheat over charcoal in automotive gas units, better pulling
power and cleaner operation.
Aircraft Liberator B24
Aircraft description and mention of record flight - African Gold Coast
to Brazil (3400 miles in 13 hrs 45 mins)
Circular No.22 June 1942
influencing the selection of an Airport site
Description of the many Civil, operational, support and environmental
factors involved including, importantly, allowance for expansion.
Heart of a Diesel
Factors affecting the in-service performance of a diesel engine.
Lockheed Lightning - P38
Completion of the first circumnavigation of the globe by an air transport
aircraft. Pan Am Boeing Clipper flew 31,500 miles westward from San Francisco
to La Guardia Atlantic Terminal.
Circular No.23 July 1942
Metals - old and new - Prof N.F. Ward
How the evolution of metals technology has affected the design and performance
of aero engines.
· Ansett Airways Services
· Fares and Freight - Qantas Sydney-Darwin Flying Boat Service
· Aircraft Landing facilities in Australia
· Australian Regular Air Transport Services
Description of the first bombing of Darwin
Aircobra - Description
Circular No.24 August 1942
our own Rubber
Alternative methods of growing rubber, pioneered overseas.
Power Plants for Aircraft
Possibility of central steam generating plant in an aircraft driving turbine
engines in the wing!!
Flying Boat in the World
Description of the Martin Mars.
Townsville Air service
Travelling Townsville - Melbourne in one day 0630 - 2100
- Today and Tomorrow
Aeradio service on the Brisbane Singapore route in 1934, with later improvements.
Aviation Aeradio helps in Battle
Aeradio station hears distress call and initiates rescue.
Development of portable steel runways in USA and Australia.
Circular No.25 September 1942
of civilians into Military Areas
Control of movement of Departmental Officers to Alice Springs and points
Investigation of Soil Conditions
A detailed explanation of the influence of soil condition on the planning
and development of an Aerodrome.
Factories Manufacture of aircraft engines and components
Description of the establishment of underground facilities in the UK.
French Flying Boat
Description of the Potez 161
Aircraft type description.
Circular No.26 October 1942
Encouragement for Departmental Officers to join the War Savings Group.
Aircraft of the Future
Projection of the development of very large flying boats, after the war
Glen L Martin
A20 (Boston) Aircraft
strips for emergency landing grounds
Use of Marston matting to construct landing strips.
Circular No.27 November 1942
Drainage system design
The need for drainage and the considerations involved in the design of
801 Aero engine
Engine description, it powers the Focke Wulf 190.
and AEA start New York Eire services
Route New York Foynes resumed may 1942. Transport of refugees out
of combat zones in the Far East.
Circular No.28 December 1942
important message - John Curtin Prime Minister
Invest in the War and Austerity Loan
by Brian Surtees, CAHS
for the index of DCA Monthly Circulars for 1941,
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