Welcome to the Stinson L-5 Sentinel Data Pages

Guide to Serial Numbers and Production Data
© James H. Gray

Sentinel Owners and Pilots Association
                              STINSON L-5 SERIAL NUMBERS

    Below are serial numbers copied from official aircraft support documents
    showing total government requisitions of the Sentinel series. The first two digits of
    the USAAF serial numbers indicate the FISCAL YEAR in which the aircraft
    were requisitioned, NOT the year of manufacture or delivery.

    Regardless of the service branch operating it, every aircraft was originally issued
    a USAAF data plate that was inscribed with a number from within the USAAF
    list. The U.S. Navy, Marine Corps, and  British. The Lend-Lease aircraft were
    drawn from within these ranks
USAAF Serial Number
Total Aircraft
42-14798 thru 42-15072
    275
42-98036 thru 42-99735
    1,700
44-16703 thru 44-18202
    1,500
45-34911 thru 45-35810*
    900
Total Orders
4,375
USAAF Serial Number
Designation
Total
42-14798 thru 42-15072
O-62
275
42-98036 thru 42-99573
L-5
1,538
42-99574 thru 42-99735
L-5B
162
44-16703 thru 44-17252
L-5B
550
44-17253 thru 44-17452
L-5C
200
44-17453 thru 44-18202
L-5E
750
45-34911 thru 45-35810
L-5G
900
45-35026 thru 45-35801
Cancelled
- 785
Total Deliveries
  3,590
                                         Army Designation Notes:

    O-62: An Army designation applied to the first 275 aircraft ordered under the
    original government contract established in December 1941. This designation was
    dropped in March 1942 when the USAAF officially established the Liaison (L)
    sub-category of light observation aircraft

    L-5A: You'll notice that the L-5A is missing from these two lists although serial
    numbers 42-98036 through 42-99573 were called L-5A's by personnel in the
    field. The  real 'A' model was in fact a 200hp, 24 volt Ranger-powered version
    that was planned but did not reach production because the engines were
    unavailable due to other committments by Fairchild, the manufacturer of the
    Ranger. However, in common usage, the L-5A designation seems to have "stuck"
    despite official factory and military documentation to the contrary. Therefore, when
    someone refers to the "L-5A", they are speaking of all but the first 275 "observer"
    models originally called O-62's  

    L-5D: This designation does not appear in the lists because that model, initially
    slated for 1,200 deliveries, was cancelled in favor of the Piper L-4.

    L-5F: A single L-5B, serial number 44-17103, was temporarily modified with a
    low noise exhaust system and a NACA five bladed propeller for evaluating stealth
    possibilities and was designated the XL-5F.

    L-5G: Serial numbers 45-35026 through 45-35801 were allocated to orders for
    'G' models that were cancelled at the end of the war.

    L-5H: A variant that was on the drawing boards when WWII ended. It had a
    hybrid fuselage halfway between the ambulance version and the original observer
    version, incorporating all the latest features of the 'G' model. The reason given for
    the fuselage re-design was that the full bodied ambulance was not as suitable for
    observation and artillery work due to limited rearward visibility.
NAVY AND MARINE CORPS SERIAL NUMBERS:

This portion of the page is still under construction.
Stop back soon.
USAAF Serial Number
Designation
Total
Bureau Number
Branch
Designation
42-99512 to 42-99521
L-5
10
02747 to 02756
USMC
OY-1
42-98448 to 42-98463
L-5
16
60460 to 60475
USMC
OY-1
42-98528 to 42-98543
L-5
16
60476 to 60491
USMC
OY-1
42-98737 to 42-98752
L-5
16
60492 to 60507
USMC
OY-1
42-98948 to 42-98959
L-5
12
75159 to 75170
USMC
OY-1
42-99040 to 42-99051
L-5
12
75171 to 75182
USMC
OY-1
           
42-99690 to 42-99699
L-5B
10
02757 to 02766
USMC
OY-1
44-16857 to 44-16866
L-5B
10
02767 to 02776
USMC
OY-1
44-16957 to 44-16968
L-5B
12
02777 to 02788
USMC
OY-1
  L-5B
05
03862 to 03866
USMC
OY-1
44-17257 to 44-17448
L-5B
45
03867 to 03911
USMC
OY-1
44-17489 to 44-18165
L-5E
109
03912 to 04020
USMC
OY1
44-18166 to 44-18196
L-5E
15
120442 to 120456
USMC
OY-1
45-35000 to 45-35017
L-5G
18
120457 to 120474
USMC
OY-2
TOTAL
  305
     
BRITISH SERIAL NUMBERS