STC SA1455GL

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240 I E. Orangethorpe, STE 105 Fullerton, CA 92831 I,Certificate

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/ill,0, /iN/,-/ M,WE McDonnell Douglas DC-9-81; DC-9-82; DC-9-83;

MD-88; MD-90-30 ~/(~j''/fll/r''1 '/ ~/I/' :/I'.;~j/h Y;';:///1;/t".

Installation of a Digital Public Telephone System (Genstar) installed per GTE Airfone STC Documentation Checklist AFP70.0J.\3-00, Rev, 29, dated May 19,1999, or later FAA Approved revisions.

Compatability of this design change with previously approved modifications must be determined by the installer.

1 All seatbaeks and bulkheads on which an Airfone is mounted must be of the breakaway lype or have no injurious objects in the head strike radius.

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

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d.,J ~ (s&tAL Charles L. Smalley Manager, Systems anu Flight Test Branch Chicago Aircrati Ccrtification Officc (7i//,,) .._---~_._----'------_ .._--------"----_._~--_._-_ .•_--._----------------------------~----_._._-----------Any al ceratioll of tilis ct::rtificdtt: is pUI1ishable:: by a fine of not exceeding S1, 000. or imprisonment not exceeding 3 yeal-s, or bach.

FAA F'lf.:!~ 8110-2 :10 68. PAGE 1 of PAGES This certificate may be r::ransferred in dCCOl"dance with FAR 21.';7.