WACO YMF-5 Model Guide
WACO YMF-5 · Model Guide
Overview
WACO YMF-5 (documented in the maintenance manual as the YMF WACO F5 series) is a single-engine, three-place open biplane. Two passengers sit in the front cockpit and the pilot sits in the rear. It has a conventional tailwheel layout, a welded steel-tube fuselage, spruce wings, fabric covering and a Jacobs seven-cylinder radial engine.
- The WACO YMF-5 comes as F5A, F5B and F5C models with gross weights of 2650, 2770 and 2950 lb.
- Jacobs R755B2 engine rated 275 hp at 2200 rpm; the F5C-8 option uses the R755A2 at 300 hp.
- Standard fuel is 48 US gal, with optional 12 gal upper-wing tanks. Minimum fuel grade is 80 octane.
- The supplied documents give no cruise, climb or takeoff figures. Get those from the seller's flight manual.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at sprinkle.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Model Guide
- Year ·
- 2026
- File size ·
- 47 KB
- Copy found at ·
- sprinkle.com
Specifications & performance
Extracted from this document.
Specifications
- Fuel capacity (gal) ·
- 48
- Wing span upper (ft) ·
- 30
- Engine power f5c (hp) ·
- 275
- Engine power f5c 8 (hp) ·
- 300
- Oil tank capacity (gal) ·
- 5
- Optional wing tank (gal) ·
- 12
Weight & balance
- Max gross weight f5a (lb) ·
- 2,650
- Max gross weight f5b (lb) ·
- 2,770
- Max gross weight f5c (lb) ·
- 2,950
How many people does the WACO YMF-5 carry?
The WACO YMF-5 is a three-place open biplane. Two passengers sit in the front cockpit and one pilot sits in the rear.
What engine and fuel does the WACO YMF-5 use?
The WACO YMF-5 uses a Jacobs seven-cylinder radial. Most models have the R755B2 at 275 hp, and the F5C-8 option has the R755A2 at 300 hp. All models need 80 octane aviation gasoline as a minimum.
What are the gross weights of the WACO YMF-5 models?
The WACO YMF-5 F5A is 2650 lb, the F5B is 2770 lb and the F5C is 2950 lb. Check the Type Certificate Data Sheet when confirming an aircraft's configuration.
Does the WACO YMF-5 documentation give cruise speed or range?
No. The supplied WACO YMF-5 maintenance manual has no cruise, range or takeoff figures. Ask the seller for the flight manual or the Type Certificate Data Sheet.
What is the WACO YMF-5 Model Guide?
The WACO YMF-5 Model Guide is a model guide for the WACO YMF-5, dated 2026.
What year was the WACO YMF-5 Model Guide published?
The WACO YMF-5 Model Guide — the WACO YMF-5 model guide on file — is dated 2026.
Common. More common than 81% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the WACO YMF-5.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
Variants and engines
F5A (serials F5001-F5009, 1986-1987): 2650 lb gross, Jacobs R755B2, limited by propeller or placard to 245 hp and 1950 rpm. F5B (F5010-F5036): 2770 lb. F5C (F5C040 and up, 1991 on): 2950 lb, carburetor or fuel injection. F5C-8: optional Jacobs R755A2, 300 hp at 2200 rpm, fitted new or as a retrofit.
Fuel, oil and brakes
Fuel is 48 US gal in two 24 gal center-section tanks above the front cockpit. One or two optional 12 gal tanks can go in the upper wings. The dry-sump oil tank holds 4 gal with the standard fuel system and 5 gal with auxiliary fuel. The toe brakes are hydraulic, with a reservoir of about one pint of Mil-H-5606 fluid.
Construction and records
The fuselage and tail are TIG welded 4130 steel tube. The wings are Sitka spruce with 4130 fittings, and the covering is Ceconite 102 Dacron fabric. The maintenance manual is the Instructions for Continued Airworthiness. Service Letters are not mandatory but strongly advised, so ask for compliance records. The type certificate is ATC542 and the STC is SA1000GL.
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Safety notes
- The F5A is limited to 245 hp and 1950 rpm. A propeller under 96 in. diameter and 72 in. pitch can exceed that limit, and the operator is responsible.
- Forward visibility is limited. The upper wing tips extend beyond the lower wings and cannot be seen from the pilot's seat, so use an observer when taxiing.
- Do not set the parking brake when the brakes are overheated or in cold, damp weather where moisture may freeze them. Trapped pressure can stop the brake releasing.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Full document text
WACO YMF-5 Model Guide WACO YMF-5 (documented in the maintenance manual as the YMF WACO F5 series) is a single-engine, three-place open biplane. Two passengers sit in the front cockpit and the pilot sits in the rear. It has a conventional tailwheel layout, a welded steel-tube fuselage, spruce wings, fabric covering and a Jacobs seven-cylinder radial engine. • The WACO YMF-5 comes as F5A, F5B and F5C models with gross weights of 2650, 2770 and 2950 lb. • Jacobs R755B2 engine rated 275 hp at 2200 rpm; the F5C-8 option uses the R755A2 at 300 hp. • Standard fuel is 48 US gal, with optional 12 gal upper-wing tanks. Minimum fuel grade is 80 octane. • The supplied documents give no cruise, climb or takeoff figures. Get those from the seller's flight manual. Variants and engines F5A (serials F5001-F5009, 1986-1987): 2650 lb gross, Jacobs R755B2, limited by propeller or placard to 245 hp and 1950 rpm. F5B (F5010-F5036): 2770 lb. F5C (F5C040 and up, 1991 on): 2950 lb, carburetor or fuel injection. F5C-8: optional Jacobs R755A2, 300 hp at 2200 rpm, fitted new or as a retrofit. Fuel, oil and brakes Fuel is 48 US gal in two 24 gal center-section tanks above the front cockpit. One or two optional 12 gal tanks can go in the upper wings. The dry-sump oil tank holds 4 gal with the standard fuel system and 5 gal with auxiliary fuel. The toe brakes are hydraulic, with a reservoir of about one pint of Mil-H-5606 fluid. Construction and records The fuselage and tail are TIG welded 4130 steel tube. The wings are Sitka spruce with 4130 fittings, and the covering is Ceconite 102 Dacron fabric. The maintenance manual is the Instructions for Continued Airworthiness. Service Letters are not mandatory but strongly advised, so ask for compliance records. The type certificate is ATC542 and the STC is SA1000GL. Safety notes: • The F5A is limited to 245 hp and 1950 rpm. A propeller under 96 in. diameter and 72 in. pitch can exceed that limit, and the operator is responsible. • Forward visibility is limited. The upper wing tips extend beyond the lower wings and cannot be seen from the pilot's seat, so use an observer when taxiing. • Do not set the parking brake when the brakes are overheated or in cold, damp weather where moisture may freeze them. Trapped pressure can stop the brake releasing.