LOCKHEAD AIRCRAFT CORP.

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81B00878R000600030127-8
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 14, 2016
• Document Release Date: January 3, 2003
• Sequence Number: 127
• Publication Date: April 3, 1961
• Content Type: CONT

Approved For Release 20
03101130 - .IA-RfPRI R00g
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ENGINEERING STUDY C]
LOCH AIRCRAFT CORP.
CHANGE PROPOSAL 1XI
t. , 98
A -
DATE 4-3-61
AFFECTS : WSPO PROJECT
NAME OF MAJOR COMPONENT
PART OR LOWEST SUBASSEMBLY
PART NO. & MODEL OR TYPE
AIRPLANE
FUEL PIMP
TITLE OF PROPOSAL
FUEL SYSTII4 REVISION
NATURE OF PROPOSAL:
SEE PAGE 2
REASON FOR PROPOSAL
1. To improve reliability of the existing hydraulically driven fuel boost pump
by replacing the present chip catcher with a 200 mesh strainer.
2. To reduce the possibility of engine flameout due to loss of fuel pressure
particularly at high altitudes by providing an electrically driven fuel
boost pump as backup for the existing hyd. driven pump. The new pump will
be controlled by the pilot and is to be turned on for all operations above
5CM ft.
ESTIMATED COST AND TIME INVOLVED - - -
ES
ADDITIONAL FUNDING REQUIRED -- - -
ESTIMATED COST FOR KITS OR PARTS See Pages 3 & 4
P
C `-
ADDITIONAL FUNDING REQUIRED None
ITEMS AFFECTED BY PROPOSAL
SAFETY
MISSION
EFFEC.
PERFORM-
ANCE
OPERATING
PROCEDURE
INTER-
CHANGE-
WEIGHT OR
WEIGHT &
TOOLS &
SUPPORT
MAINTE-
NANCE
SERVICE
LIFE
FLIGHT
MANUAL
MAINTE-
NANCE
TIVENESS
ABILITY
BALANCE
EQUIPMENT
PROCEDURE
MANUAL
11
EST. MAN/HRS. REQ'D. TO ACCOMPLISH CHANGE IN FIELD
SOURCE OF PARTS FOR KIT
AVAILABILITY - - WEEKS AFTER APPROVAL
See Page 4
LAC
DISPOSITION OF SPARES AFFECTED The following will no longer be used: STATINTL
H-80 Chip Catcher; Revere Float Switch P/N F6300-8 (F6300-26 on U-2C a/c)
INITIATED BY :
APPROVED WSPO
Approved FoL&Iease 2003/01/30 : CIA
RDP81B00878ROQQ>>itQ003
127-8
 LAC-98
Approved ;For R lease 2003/01/30 : CIA-RDP81B0008878 0006002_80f 4
NATURE OF PROPOSAL:
Design Study
1. Modify the fuel system in one aircraft (692/359) by installing an
electrically driven fuel boost pump with related plumbing, wiring
and cockpit controls. This has been accomplished as Contract SP-1918
Product Improvement.
2. Performance data to be obtained from operation of the aircraft at
LAFB over a significant period (approximately 3 months).
3. This test installation will be replaced by the standard installation
(outlined below) at a convenient time at the conclusion of operational
tests.
94an$e Pro-pvsal
1. Modify the fuel system on all aircraft (except serials 342 & 358)*
as follows:
a. Replace the existing Chip Catcher (P!N H-80) with a 200 mesh
strainer.
b. Install a submerged A.C. electric motor driven boost pump in
the right-hand sump tank. Install related plumbing to connect
pump in parallel with the existing boost pump and bypass line.
This includes the addition of two new check valves; one in each
boost pump fuel out line, and a pressure switch between the check
valve and the new pump (see attached diagram).
c. Replace the existing sump tank overflow light in the cockpit with
a fuel pressure indicator light (elec. boost pump only) and install
pilot's control switch. Install power relay on Q-bay "CB & Relay"
panel and install system wiring.
d. On all aircraft remove the overflow float switch from the sump tanks.
NOTE: These fuel system modifications previously authorized
for incorporation on a'c serials 342 and 358 in con-
junction with In-Flight Refueling provisions under
approved ECP No. LAC-101.
v 2. Prepare and issue a Service Bulletin.
3. Fabricate appropriate aircraft provisioning kits.
4. Installation of kits can be accomplished in the field. Modification of
sump tanks to incorporate pump flange must be done at the factory on a
turn around basis unless the entire program is scheduled for IRAN.
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 STATINTL Approved For Release 2003/01/30 : CIA-RDP81B00878R000600030127-8
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 Approved For Relej*gT4( 3/01/30: CIA-RDP81BOO878RO
TO
NAME AND ADDRESS
INITIALS
DATE
1 .
2.
3.
4.
5.
6.
7.
RETURN TO
SENDER
ACTION
CONCURRENCE
INFORMATION
COMMENT
FILE
SIGNATURE
REMARKS
FROM
NAME AND ADDRESS
03/01/30: Cl
DATE
~t~P 88 00
FORM 1582
1.59
0600030127-8
STATINTL