STC SA917EA

550 Route 55 Urbana, OH 43078

Part 3/23 of the Civil Air / Federal Aviation Regulations.

See Attached Eligibility List Original Product--Type Certificate Number :

Make : No. 34-1002, Revision D, Model : Dated April 27, 1977

Installation of “Grimes Manufacturing Company Aviation White Anticollision Strobe Light Systems Two Light or Three Light Series 555 for Wing Tips and Tail P/N 03-0555-()” in accordance with Grimes Manufacturing Company Instruction Sheets P/N 30-0555-(), Revision D, dated April 27, 1977, or later FAA approved revision.

1) The Aviation White Anticollision Light Systems P/N 30-0555-() listed in the aforementioned Instruction Sheets meet the requirements of FAR 23 as follows:

a. 23.1397 ( c), 23.1401 ( c), (d), (e), effective August 11, 1971,

b. 23.1401 (f ) in effect on August 10, 1971.

(See STC Continuation Sheet Page 3)

Date of application : February 21, 1972 Date reissued : May 5, 1988, November 5, 1991, June 4, 2007

Date of issuance : May 30, 1972

Date amended : July 23, 1973, November 30, 1977

( Signature) Charles L. Smalley Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

( Title)

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number SA917EA Date Reissued: June 4, 2007

Limitations and Conditions: Cont.

2. To complete the approval of these lights as anticollision light systems, the installations on individual aircraft must be checked to show compliance with FAR 23.1401 (b) (Field of Coverage). The Instruction Sheets contain an acceptable method for checking the adequacy of coverage when using two lights (wing tips) or three lights (wing tips and tail lights).

NOTE: Field of coverage requirements must be met after masking (if any) is installed.

3. The following placard must be mounted in front and in plain view of the pilot and in reasonably close proximity to the stro be light switch:

“CAUTION: TURN OFF STROBE LIGHT WHEN TAXIING NEAR OTHER AIRCRAFT OR WHEN FLYING IN FOG OR CLOUDS. STANDARD POSITION LIGHTS MUST BE USED FOR ALL NIGHT OPERATIONS.”

4. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this ch ange and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of those aircraft. This determination should include a night flight check as specified in AC 43.13-2 Chapter 4, Paragraph 42a.

5. NOTE: At this time, aircraft whose application for type certificate was made before April 1, 1957 may, but need not comply with the field of coverage requirements of FAR 23.1401 (b). These aircraft must comply with the requirements that the lights will not be detrimental to the flight crew’s vision or detract from the conspicuity of the position lights (i.e., does not physically obstruct the field of coverage of the position lights).

6. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

…END…