WACO AIRCRAFT COMPANY
MODELS: WACO YOC and YOC-1
T.C. NUMBER: ATC 569
I - SPECIFICATIONS PERTINENT TO ALL MODELS
Placard speeds Level flight or climb - 158 mph True Ind.
Glide or dive - 214 mph True Ind.
Flaps extended - 112 mph True Ind.
Fuel capacity 50 gallons (two tanks - one in each upper wing at
25 gallons
Oil capacity 4 gallons
No. passengers 4 maximum (See NOTE 3)
Baggage 100 lbs. (compartment aft of cabin) (See NOTE 3)
Standard Weight 3350 lbs. (see NOTE 2)
C.G. limits (-19.7) and (-7.1)
Datum Lower wing leading edge
Leveling means Lower surface upper wing at strut points
Specification basis Approval Type Certificate No. 569
Serial numbers 3951 and up manufactured prior to 9/30/39 eligible.
Approval expired as of that date.
EQUIPMENT:
(* Means net increase)
Class I:
101. Engine ring cowl
102. Battery and box (under rear seat) 40 lbs.
103. Starter (direct electric) 21 lbs.
104. Generator 12 lbs.
105. 6.50-10 wheels with 7.50-10 4-ply tires
106. 10.5 inch streamline tail wheel
107. Throw-over type control column
108. Upper wing flaps - electrically or
vacuum operated
109. Propeller - wood (fixed pitch) 46 lbs.
Class II:
200. Miscellaneous items as noted in
approved weight and balance report)
Class III:
301. Extra fuel capacity
(a) 70 gallons (two tanks at 35 gallons
each) and 5 gallon oil capacity 10 lbs.*
(b) 95 gallons (two tanks at 47-1/2
gallons each) and 6-1/4 gallon
oil capacity 18 lbs.*
302. Landing lights 11 lbs.*
303. Flares (three 1-1/2 minute electric) 17 lbs.*
304. Leather upholstering 7 lbs.*
305. Litter installation 14 lbs.*
306. Radio equipment (installed between
firewall and under rear seat) and
engine shielding 45 lbs.
307. Special paint
308. Miscellaneous extra instruments
309. Propellers
(a) Fixed metal (Curtiss 55501) 51 lbs.
(b) Adjustable metal 78 lbs.
(c) Controllable metal (Hamilton
Standard 2B20 hub, 6109A-9,
6-109A-10, 6135A-9 or 6135A-10
blades. Diameter 8'3-1/8"
maximum, 8'7/8" minimum.)
Engine limits for Model. YOC-1:
Take-off and climb,
2000 rpm (285 hp)
For all other operations
24 in.Hg., 2000 rpm (250 hp)
310. "Y" type control column 4 lbs.*
311. Aileron tab installation No change in weight
312. Large elevators (Drawing 32306) No change in weight
313. Heater and ventilator
314. Wheel streamlines 24 lbs.*
315. Extra door and wing walk 16 lbs.*
316. 8.50-10 40-ply tires 8 lbs.*
317. Ski type landing gear (Drawing 20245) No change in weight)
NOTE 1. Eligible for export as follows, subject to inspection for equipment
specified in Chapter XII of Inspection Handbook (9/30/39):
(a) Canada
- Landplane
- Skiplane - not eligible. However, structure complies with Canadian
requirements for ski installation when Item 317 is installed.
(b) All other countries except Great Britain and Australia.
NOTE 2.
(a) Maximum standard weight YOC or YOC-1 with wood propeller is 3200 lbs.
(b) Maximum standard weight YOC with adjustable metal or fixed metal
propeller is 3200 lbs. Maximum standard weight YOC-1 with fixed metal
propeller is 3350 lbs.
(c) Maximum standard weight YOC or YOC-1 with controllable metal propeller
is 3360 lbs.
NOTE 3. Five-place airplanes must have:
(a) Additional safety belt installed on rear seat.
(b) Baggage compartment placarded as follows unless actual weight and
balance shows a lesser restriction necessary:
"Maximum allowable 100 lbs.
Maximum with 3 passengers on rear seat 0 lbs."
II - MODES YOC, DESIGNATION 5 PCLE (See NOTE 3)
Engine Jacobs L-4, L-4M, or L-4MB
Engine limits For all operations, 2000 rpm (225 hp)
III - MODEL YOC-1, DESIGNATION S PCLB (See NOTE 3)
(Same as model YOC except engine. YOC- 1 approximately 20 lbs. heavier than Model
YOC.)
Engine Jacobs L- 5, L-SM, or L-5MB
Engine limits Take-off and climb
(See Item 309C) 2000 rpm (285 hp)
For all other operations
1910 rpm (250 hp)