TECHNICAL INFORMATION ON SOVIET AIRCRAFT, MAINTENANCE AND INSPECTION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00047R000100060008-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 27, 2016
• Document Release Date: April 30, 2013
• Sequence Number: 8
• Publication Date: August 8, 1951
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/04/30 : CIA-RDP82-00047R000100060008-5
a~ # CLASSIFICATION SECRET
CENTRIL INTELLIGENCE AGENCY
INFORMATION REPORT
COUNTRY USSR/ Austria (Soviet Zone)
SUBJECT Technical Information on Soviet Aircraft, Maintenance
and Inspection
PLACE
ACQUIRED
DATE
ACQUIRE
DATE OF INFORMATION
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Engines
DATE DISTR. Aug 51
NO. OF PAGES
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
the .RD--45 is the Soviet version of a British engine.
The VK-l is.an improved version of the RD-45 and is installed ip the IL-28.
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prior to flight by sparks, (from spark plugs located in cans and #8), which
sparks ignite the fuel air combination in the cans. The engines are not turned o" 50X1
prior to the igniting process.
IL-28 Aircraft
29 The only equipment or supplies which had been received for use With the IL-28 air-!
craft was;one radio set and one radar gun-sight. These were to be used for train- 50X1
ing purposes. A constant pressure of 728 mm Ng. and a constant temperature of
18C is maintained at all altitudes. Bulletproof glass is used at the navigators'
and pilots' positions.
The fuel capacity of the-
e IL-28 is 8 tons." The fuel use is
aviation kerosene with 1% of either MS oil (Maslo Selektivnoi Ophistki) or NIX oil
(Maslo Kislotno-Kontaktnoi Qchistki). The MS oil is of selected refinement Which
has undergone mechanical filtering and refining processes; MK oil is treated with
acids and electricity. The VK-1 engine uses 12 liters of MK-20 or MK-22 oil per
engines
The MIG-15 Aircraft
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CLASSIFICATION SECRET
DISTRIBUTION
I
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SECRET
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Preservation and Storage of Aircraft
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4.
craft
All ai
were operational and
r
the regiment goes on leave. The process consists of filling the cylinders with50X1
oil, greasing the parts which are liable to rust, covering wheels, engine and
cockpit with covers and final storage of the the aircraft outdoors. To recondition
aircraft so stored takes three men four to five hours. When a rebuilt engine
arrives it is covered with a mixture of a'rubbery substance and oil. This rubbery
substance, when combined with sulphur, is the material from which gasoline resi50X1
ant gasket material is made.
Maintenance Organization and Procedures
The following information on maintenance, organization and procedures is based
onexperience with PE-2 type aircraft. Each aircraft in a squadron is assigned
one echnical officer, one senior sergeant, and one junior grade enlisted man.
Every squadron has an inspection commission consisting of the Squadron Engineering
Officer, the Flight Engineering Officer and one Technical Officer. In addition,
the Division Engineering Officer, the Chief Engineer and four or five technical
assistants which make unscheduled inspections of the squadrons three or four times
a 'year. General maintenance work is done at the squadron level and specialized
work is performed in one of the FARMS. PARMS are assigned to Regiments, Divisions,
and Armies in the following manners
'Regiment
FARM
1
Division -
PARM
4
Army -
FARM
11
Airframe repairs
Painting, replacement of tubing,
small repairs on radios and electri-
cal equipment.
Major overhaul of all components in-
eluding engines.
Each mechanic has his own tools but there is always a tool shortage. Special
equipment used for testing instruments, electrical equipment, etc. is usually
available at a Special Equipment Shop.
Inspections
7. The, preflight inspection takes three men 15 to 20 minutes and consists of removing
the covers, checking oil, hydraulics, water and fuel tanks, warming up the engines,
and a visual check for leakages. The warming of the engine is done by an officer
of the crew, in whose absence it is done by the senior enlisted man. After
inspection, the'Flight Engineering Officer signs the release for flight. After
flight, inspection plates and cowlings are removed and a complete visual check
is performed on all accessories, attachments, etc. At the five hour inspection
the oil pan is removed and the crankshaft, connecting rods and bearings are
checked. This inspection takes three men about two hours to complete. The 10
hour inspection includes the removal of valve covers, checking of springs and
clearanc?s'and the lubrication of control junctions and propeller controls. Three
men work eight to ten hours on this inspection. At the 25 hour inspection fuel
tank covers are removed, inspected for leakage, and cleaned, the magnetoes and
points are checked and a complete lubrication is done. This inspection takes
three men about 12 days to complete. Three men work two days completing the 50
hour inspection which includes replacement of hydraulic fluid, removal of oil
tanks and cleaning and inspection by the squadron commission. Oil is changed
every 15 to 18 hours between 50 hour inspections. The 100 hour inspection
includes an engine change. The engines are drawn from battalion supply and are
equipped'with accessories. This inspection takes three men three to seven days
to complete; an engine change alone can be done in one day by three men. At the
end of 560 hours, the aircraft is sent to PARM #ll for major overhauling.
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/04/30 : CIA-RDP82-00047R000100060008-5
 Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/04/30 : CIA-RDP82-00047R000100060008-5
SECRET
Supply
8. The squadron Engineering Officer is in charge of Technical Supply. The quantity
on hand depends on available Battalion supplies and the aggressiveness of the
Engineering Officer. All items except engines are kept 'at the squadron level. All
items carried by Squadron supply are issued from Battalion supply; an additional
number of engines, (approximately 5), are also carried at this level. Generators
rubber couplings, oil-lines, water pipes and exhaust pipes are items which are
most difficult to secure as part replacements.
Records and Reports
g, The Aircraft Technical Officer keeps a daily record. nclosure (i 7, of the
preflight and after flight inspections. The Squadron Engineering Officer keeps
the inspection and maintenance records; the Technical Officer of each aircraft
maintains'a flight log. In the event of engine or airframe failure, a Regimental
or Divisional Inspection Commission makes an examination to determine the cause.
An unsetsfaetory report is'written and in some cases has resulted in the ground-
ing of all similar aircraft, these orders having been directed from Air Force
Headquarters in Moscow,
ENCLOSURE (A) Typical "Daily Maintenance Record" of preflight and after flight
inspections.
SECRET
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 Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/04/30 : CIA-RDP82-00047R000100060008-5
ENCLOSURE (A)
DAILY MAINTENANCE RECORD
(Typical Record of ai y refli ht and
Afterflight-Inspections
A complete record of all work performed on the aircraft (PE-2 type) is maintained.
by the Aircraft Maintenance Officer (Tekhnik Samolyota) who normally holds the rank of
Junior Technical Lieutenant (Mladshyi Tekhnik Leitenant) and is responsible for one
aircraft. The title of the document is Radochyi Tetryad' Tekhnika Samolyota Mladshyi
Leitenant Petrov, V.A.,SamolyQt #12/343 (Work note book of Technician 2nd Lieutenant
Petrov, VOL., A rora. ,12/343). There is no standard form or size used for this
rec(ord. This document, as well as any other note book or formulor (Aircraft engine
maintenance, replacement of parts, periodic inspections and overhauls) is classified
SECRET. When a new note book is issued, the aircraft technical officer presents it to
the unit Secret'Control Office Rho numbers all the pages of the note book, affixes the
wax seal and gives the book a registration number. When all the pages are filled, a new
note book is started and the old book is turned into the Secret Control Officer who
certifies as to its destruction.
$AMd'LE' ENTRIES
Date
Description of Illork
Time
Re'd
By Whom
Performed
Signature
Remarks
1.2.E
9
rep are work space
1. P
10 m
Engine Mechanic
2. Remove covers from
10 m
Air Crew
engines and aoft
3. Check servicing of
30 m
Crew Chief
fuel and oil
4. Drain Segreator
10 m
Crew Chief
5. Start, Check
2C m
Aoft Tech
Engines
Officer
6. Perform'preflt
20 m
Loft Tech
inspection
Officer &
Crew Chief
7. Service the acft
5 hrs
The Crew
8. Perform after flt
90 m
Acft Tech Off
(daily) inspection
and Crew Chief
9. Refuel Aoft
15 m
Crew Chief
10. Cover the Acft
10 in
The Crew
1
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr2013/04/30 : CIA-RDP82-00047R000100060008-5