SDR UIEA2021041600918

Service difficulty report · Windshear Sys · Boeing 767306

Difficulty date: April 10, 2021
Submitted: April 16, 2021
Operation: Air carrier
Aircraft: N1399A
Make and model: Boeing 767306
Aircraft serial: 27959
Aircraft time: 93,397 hours, 18,300 cycles
System (JASC): 3436 · Wind Shear Detection System
Part: Windshear Sys
Condition: Malfunctioned
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

DURING CLIMB OUT WINDSHEAR SYSTEM EICAS MESSAGE AND FO WX FAIL FLAG ON EHSI. BOTH BLANKED AFTER SWITCHING WX RADAR TO L SYSTEM. WX FAIL FLAG REAPPEARED SHORTLY AFTER. INSPECTED L WAVE GUIDE, NO DAMAGE NOTED IAW AMM 34-43-04 & 1261164 ITEM 4. SWAPPED LEFT CENTER SYMBOL GENERATOR FOR EFIS FROM T/S. LEFT SYM GEN P/N 66-9456-101 S/N 2597 IN CENTER POS AND CENTER SYM GEN P/N 622-9456-101 S/N 113771 IN LEFT POS AFTER CHECK IAW AMM 34-12-010 AND GMM 3.27.10.