TM 1-1520-238-T-7 11–404.2 Change 5 11–111. RATE GYRO 1 NO–GO LH AFT CATWALK – APPEARS ON HOD (cont) 11–111 6. Detach P987 from (A637)J3. Check for short between: J997–1 and ground, J997–2 and ground. Does short exist? YES Repair shorted wire between: J997–1 and P987–H, J997–2 and P987–P. Go to paragraph 11–88. NO Replace STAB CONT UNIT 1 (A637) (TM 1-1520-238-23). 7. Open STAB AUTO AC (A76)CB2 circuit breaker. Check for open between: J997–9 and P987–W, J997–3 and P987–N, J997–6 and GS652–A. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 8. 8. Detach P987 from (A637)J3. Check for short between J997–9 and ground. Does short exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 9. 9. Check for short between J997–7 and ground. Does short exist? YES Go to step 10. NO Go to step 12. 10. Detach P986 from (A637)J2. Check for short between J997–7 and ground. Does short exist? YES Go to step 11. NO Replace STAB CONT UNIT 1 (A637) (TM 1-1520-238-23). 11. Detach P682 from (A69)J3. Check for short between J997–7 and ground. Does short exist? YES Repair shorted wire between: J997–7 and P491–A15, (A323)J6–A15 and (A323)TB1–7–D, (A323)TB1–7–A and (A323)J3–B6, P497–B6 and P682–125, (A323)TB1–7–C and (A323)J6–A9, P491–A9 and P996–B. Go to paragraph 11–88. NO Replace DASEC (A69) (TM 1-1520-238-23). 12. Check for open between: J997–7 and P491–A15, (A323)TB1–7–A and P682–125, J997–8 and P491–A16, (A323)TB1–7–H and P682–124, (A323)J6–A15 and (A323)TB1–7–D, (A323)J6–A16 and (A323)TB1–7–E, (A323)TB1–7–C and (A323)J6–A9, (A323)TB1–7–G and (A323)J6–A10, P491–A9 and P986–B, P491–A10 and P986–A. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Replace RATE GYRO 1 (A639) (TM 1-1520-238-23). END OF TASK