SDR FDEA202008059477

Service difficulty report · Switch · Airbus A300B4622R

Difficulty date: July 9, 2020
Submitted: August 5, 2020
Operation: Air carrier
Aircraft: N722FD
Make and model: Airbus A300B4622R
Aircraft serial: 479
Aircraft time: 57,120 hours, 30,535 cycles
System (JASC): 5270 · Door Warning System
Part: Switch
Part number: NSA93203001
Condition: Worn
Location: R1 Door
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

R1 MAIN CABIN ENTRY DOOR SLIDE WILL NOT ARM. IAW TSM 52-70-00, CHECKED FOR GROUND AT R1 DOOR LIMIT SWITCHES. FOUND EXCESSIVE RESISTANCE AT PIN "E" OF LIMIT SWITCH 1 (42WS), AND OPEN FOUND AT PIN "E" OF LIMIT SWITCH 2 (8WS). NO TIME TO FURTHER TROUBLESHOOT DUE TO HIGHER PRIORITY MAINTENANCE. REMOVED AND INSTALLED BOTH 8WS AND 42WS SWITCHES IAW AMM 52-71-00-04-01, CHECKS GOOD

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