SERV ICE IN STRUC TION M20- 82
14 MARCH, 1988
Page 1 of 3
SUB JECT:BAG GAGE DOOR, IN SIDE LATCH MODI FI CA TION
MODEL/S/N
EF FEC TIV ITYM20J:24- 0084, 24- 0378 THRU 24- 1650
24- 3000 THRU 24- 3059
M20K:25- 0001 THRU 25- 1165
M20L:26- 0001 THRU 26- 0019
TIME OF
COM PLI ANCE:AT OWN ERS DIS CRE TION
IN TRO DUC TION:IT HAS BEEN DE TER MINED THAT IM PROPER SE CUR ING OF THE
IN SIDE BAG GAGE DOOR LATCH MECHA NISM, AF TER OP ERA TION,
HAS BEEN THE REA SON FOR BAG GAGE DOORS COM ING OPEN DUR ING
TAKE OFF OR IN FLIGHT.
IN STRUC TIONS:
1.Open bag gage door from out side air craft.
2.Re move Roya lite cover from in side bag gage door which cov ers the in side han dle mecha nism.
3.Pull white knob out to re lease Red han dle from its se cured po si tion.
4.If S.I. M20- 63, dated 4- 12- 83, has been in cor po rated, re move the spring con nected be tween
cle vis pin on Red han dle and clip on door frame.
5.Re move two (2), cot ter pins, AN380- 2-2, from two (2) cle vis pins, AN393- 33(modi fied) and
AN393- 35 that se cure the Red han dle to latch and rod as sem bly mecha nism.
6.Re move Red Han dle; re move White Knob as sem bly from hole in Red han dle.
7.Mod ify large hole in Red han dle to a slot ted hole per Fig ure M20- 82-1 be low.
8.Re move ex ist ing clip, P/N 350191- 003 or -005, from door frame by drill ing out two (2) riv ets
(SEE FIG M20- 82-2).
9.In stall 350191- 9007 clip/pin as sem bly, lo cat ing pin rela tive to slot in han dle as il lus trated in
fig ure M20- 82-2. Drill two (# 30 drill) holes into bag gage door us ing pi lot holes in clip/pin assy. as
a guide. In stall with two CR3213- 4-2 riv ets.
10.In stall lan yard, P/N 90312A21, on RED han dle per Fig ure M20- 82-2. Use CR3213- 4-3 rivet and
two AN960-4 wash ers (one on each side of lan yard fit ting).
11.In sert Hitch Pin, P/N 98335A044, on to lan yard loop.
12.Re in stall modi fied Red Han dle onto latch mecha nism us ing origi nal cle vis pins and two (2) new
cot ter pins, P/N AN380- 2-2.
13.Re -at tach spring be tween Red Han dle cle vis pin and 350191- 9007 clip/pin as sem bly.
In cor po rate that por tion of SI M20- 63 that adds the spring, if not al ready done.
14.Check in side door latch mecha nism op era tion to in sure that spring pulls cam into cam slots of
out side han dle when Red Han dle is in the closed po si tion. This auto matic en gage ment should
oc cur every time the Red Han dle is opened and then closed.
15.Ob serve move ment of latch ing rod arms as in side Red Han dle is opened and closed; be sure rod
arm link has been re at tached to Red Han dle with the cle vis pin.