- Holder
- Merlyn Products Inc
- Revision
- 0
- Revised
- April 30, 2008
- Status
- Current
- Product
- Engine
- Certification basis
- Part 1, Part 33
- Models
- 1
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 1
| Model | Also known as | Note |
|---|---|---|
| IO-540-MX1 |
Airworthiness directives · 2
ADs whose products are models on this data sheet, matched by model and maker.
STCs approved under this data sheet · 1
What the data sheet says
From the PDF’s text layer, line by line: tables lose their columns. The PDF is the record.
Page No. 1 2
Rev. No. 0 0
DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
TC E00008SE
Revision Original
Merlyn Products
IO-540-MX1
Original Issue Date:
April 30, 2008
TYPE CERTIFICATE DATA SHEET E00008SE
This data sheet, which is part of Type Certificate No. E00008SE, prescribes conditions and limitations under which the product
for which the type certificate was issued meets the airworthiness requirements of the Federal Aviation Regulations.
Type Certificate Holder: Merlyn Products Inc.
7500 West Park Drive
Spokane, WA 99224
I – Engine Model IO-540-MX1
Type: 6HOA Direct Drive
Rating:
Takeoff and Maximum 250 @ 2425
Continuous hp, rpm,
Full throttle at
Sea level pressure altitude
Fuel
(Minimum grade aviation
Gasoline) 100/100LL
Injection Lycoming Type FM250
Pump Drive See Note 3
Oil Lubrication
Oil, SAE Number, Above 80 deg F 60
Above 60 deg F 50
30 deg F to 90 deg F 40
0 deg F to 70 deg F 20
Below 10 deg F 20
Oil Sump Capacity, Quarts 12
Ignition, dual
Magneto drive 1.500:1 – clockwise viewed from propeller end
Magnetos (2) Unison Slick Aircraft Products 6363 (Left)
6360 (Right)
Optional Magnetos (2) TCM Bendix S6LN-1208 (Left)
S6LN-1209 (Right)
Timing (deg BTDC) 20
Spark Plugs Champion RHB37E
Champion RHB32E
Champion RHB-36S
Champion RHB-32S
E00008SE 2
Compression
Bore and Stroke, in 5.125 x 4.375
Displacement, cu. in. 541.5
Compression Ratio 7.3:1
Weight (dry), lb 479 lb
C.G. Location See Note 5
Propeller Shaft – Specification Type 2, Flange Modified
A.S. 127
Crankshaft dampers (torsional) One fi fth order and one sixth order damper.
Certification Basis:
FAR 33, Effective June 10, 1964 including amendments through amendment 21
NOTE 1. Temperature Limits (Maximum permissible)
Cylinder head (well type thermocouple) 500 deg F
Oil Inlet 245 deg F
Air inlet to injector 400 deg F
Note 2. Pressure Limits
Fuel 45 psi max, -2 psi min at inlet to fuel pump.
Pressure at inlet to fuel injector
Maximum 45 psi
Minimum 18 psi
Minimum Idle 12 psi
Max Injector in 65 psi
Idle cutoff
Note 3. Accessory Drive Provisions:
Maximum Torque
(in-lb)
Accessory Rotation Facing
Drive Pad
Speed Ratio to
Crankshaft
Continuous Static
Maximum
Overhung
Moment
(in-lb)
Starter CC 16.556:1 N/A 450 150
Alternator C 3.250:1 60 120 175
Vacuum Pump CC 1.300:1 70 450 25
Hydraulic Pump C 1.385:1 100 800 40
Tachometer C 0.500:1 7 50 5
Prop Governor C 0.947:1 125 2200 25
Fuel Pump CC 1.000:1 25 450 25
“C” Clockwise, “CC” Counter-Clockwise (viewed from anti-propeller end)
NOTE 4, Accessories and Equipment
Starters, generators and alternators approved for use on this engine are listed in the latest revision to Merlyn Products
Specification No. MX1
NOTE 5. The engine center of gravity is located 18.25 inches from the front face of the propeller mounting flange, and 0.88
inches below and 0.16 inches to the right of the propeller center line.
NOTE 6. This engine incorporates provisions for absorbing propeller thrust in both tractor and pusher type installations.
NOTE 7. Refer to Merlyn Products document MX1-01A, Section 1.4.3.6 for applicable inspection procedures for engines which
have been operated above the specified maximum continuous RPM rating (except momentary overspeed as defined in this
document).
-END-.