WACO YMF F5 Series, Maintenance Manual

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WACO Classic Aircraft Corporation
YMF WACO F5 SERIES MAINTENANCE MANUAL
REVISION: H Page
15
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RELEASED: 07/21/2017 PART NO. YMFAMM-1
SECTION 6
AIRFRAME
6.1 FUSELAGE
The Federal Aviation Administration (FAA) occasionally publishes Airworthiness Directives (ADs) that apply to
specific groups of aircraft. They are mandatory changes and are to be complied with within a time limit set by
the FAA. When an AD is issued, it is sent to the latest registered owner of the affected aircraft and also to
subscribers of the service. The owner should periodically check with his/her A&P mechanic for the latest
issued AD against the aircraft and accessories.
One hundred hour inspections are required by law if the aircraft is used commercially. Otherwise this
inspection is left to the discretion of the owner. This inspection is a complete check of the aircraft and its
systems, and should be accomplished by a qualified aircraft and powerplant mechanic who owns or works for
a reputable repair shop. The inspection is listed, in detail, in the inspection report of the appropriate service
manual.
An annual inspection is required once a year to keep the Airworthiness Certificate in effect. It is the same as
a 100-hour inspection except that it must be signed by an Inspection Authorized (IA) mechanic or a Flight
Standards District Office (FSDO) representative. This inspection is required whether the aircraft is operated
commercially or for pleasure.
For all information regarding engine operation, servicing and maintenance refer to the Jacobs Operators
Manual. For all other accessory items such as instruments, radios, strobe lights, etc., refer to their respective
manufacturer’s service manuals. Items needing repair or overhaul should be returned to the manufacturer or
an approved repair station.
6.2.1 INSPECTION PERIODS
An inspection schedule check list form can be found in Section 10 of this manual and should be used to
perform the following inspections.
(A) 50 Hour Maintenance Schedule
– Every 50 hours
(1) Engine check. (See Jacobs Operators Manual in Section 10)
(2) Oil in engine should be changed every 50 hours or less with the oil of viscosity and grade defined in
Section 3 of Jacobs Operators Manual.
(3) Inspect gasoline gauges, and if sediment or water has accumulated in the bottom, remove it by
opening the valve at the bottom of the gauge or by removing the gauge from the tank and shake the
sediment out through the top. In extreme cases it may be necessary to remove and disassemble the
gauge and then the gauge can be cleaned with a small bottle brush. Care must be taken when
reinstalling the drain valve as to not over tighten. For the plastic type gauge see fuel gauge
installation instruction sheet in Section 7 of this manual.
(4) Clean gasoline strainer.
(5) Make it a practice to keep the entire airplane clean inside and outside, this will greatly facilitate
inspection.
(6) Inspect airplane carefully and at the same time use light oil and lubricate moving parts on control
system such as aileron and tail hinges, aileron strut connections, etc. (See Lubricant Chart).
(7) Brake Service
– The brake system is filled with MIL-H-5056 (petroleum base) hydraulic brake fluid.
The fluid level should be checked periodically or at every 50 hour inspection and replenished when
necessary. The brake reservoir is located on the left lower firewall in the engine compartment. If the
entire system must be refilled, fill with fluid under pressure from the wheel end of the system. This
will eliminate air from the system.