Mooney SBM20-281 Owner's manual

Brand: Mooney

Model: SBM20-281

Type: Owner's manual

Mooney SBM20-281 is a replacement part for Mooney Airplane Company aircrafts. It is an alternate air duct that helps to provide the engine with air in the event of a failure of the primary air intake system. The duct is made of rubber and has a coiled wire inside to help maintain its shape. It is important to inspect the duct regularly to ensure the coil is secure and not unwinding. If the coil becomes loose, it could damage the duct and affect its performance.

MOONEY AIRPLANE COMPANY, INC. SERVICE BULLETIN

Louis Schreiner Field

Kerrville, Texas 78028

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

SERVICE BULLETIN M20-281

Date: July 10, 2003

SUBJECT: Alternate Air Duct - Inspection for confirmation of configuration and subsequent replacement

to new configuration.

MODELS/ S/N

AFFECTED:

M20M – S/N 27-0290 THRU 27-0316; and any S/N’s, which may have had a Seamech

original configuration alternate air duct installed as spare parts.

TIME OF

COMPLIANCE:

WITHIN THE NEXT 25 HOURS OF FLIGHT OPERATIONS OR AT NEXT SCHEDULED

MAINTENANCE ACTION

INTRODUCTION: On one aircraft, the coiled wire inside the Alternate Air (rubber) Duct , P/N 0906913

(Seamech) has come loose at the end of the coil and is unwinding within the duct, inside

wall. The vendor, Seamech, has re-designed the duct and re-identified it as P/N 0906913

(Rev. A).

The Seamech, original configuration, P/N 0906913, Alternate Air Duct must be replaced

with the new P/N 0906913 (Revision A) configuration within the time frame stated above.

If a Baxter Woodhouse & Taylor, P/N X6913, Alternate Air Duct is installed and has not

deteriorated beyond visual serviceability criteria, it is an acceptable configuration and does

not have to be replaced due to the criteria stated within this Service Bulletin.

INSTRUCTIONS: 1. Remove top and bottom cowling from aircraft.

2. Inspect the installed Alternate Air Duct for configuration identification. If the

Seamech duct does not have (Rev. A) stamped/written adjacent to the P/N, the duct

must be replaced.

3. Loosen hose clamps at both ends of the Alternate Air Duct, and remove the duct

from the aircraft.

4. Replace with either a Baxter Woodhouse & Taylor, P/N X6913, or the Seamech,

P/N 0906913 (Rev. A).

5. Install Duct and secure hose clamps at both ends.

6. Inspect entire engine compartment for obvious (visual) conditions of deteriorated or

malfunctioning components.

7. Re-install bottom and top cowling onto aircraft.

8. Enter appropriate Log Book records to show compliance with SB-M20-281.

9. Return aircraft to service.

WARRANTY: If the Alternate Air Duct has been installed on the aircraft within the past 90 days (standard

warranty) Mooney Airplane Company, Inc. will warrant up to 1.0 hour labor to inspect and

replace the original configuration duct and return aircraft to service.

REFERENCE

DATA: N/A

PARTS LIST: Service Bulletin Kit – P/N M20-281-001

Item Part Number Description Qty.

1. 0906913 (Rev. A) Duct, Alternate Air (Seamech) 1

FIGURE/TABLES: Refer to Figure SB M20-281-1 on following page.

MOONEY AIRCRAFT CORPORATION Louis Schreiner Field, Kerrville, Texas 78028 tel: 830.896.6000 www.mooney.com

Service Bulletin M20-281 Page 2 of 2

Dated: July 10, 2003

FIGURE SB M20-281-1

Mooney SBM20-281 Owner's manual

Mooney SBM20-281 Owner's manual

Mooney SBM20-281 Owner's manual

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