SDR UIEA2025101001267

Service difficulty report · Indication Sys · Boeing 74746NF

Difficulty date: October 10, 2025
Submitted: October 14, 2025
Operation: Air carrier
Aircraft: N450PA
Make and model: Boeing 74746NF
Aircraft serial: 30808
Aircraft time: 101,813 hours, 17,089 cycles
System (JASC): 2930 · Hydraulic Indicating System
Part: Indication Sys
Part number: 285U0032202
Part serial: D02197
Condition: Faulted
Location: Hyd System
Stage of operation: CR
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

FLIGHT CREW REPORTED NR 4 HYD QTY INDICATION ERRATIC IN FLIGHT. PERFORMED WIRING CHECK BETWEEN DW 3112C PIN 2 AND DM7838EA PIN G15, DM 7838BA PIN D15, CHECKS NORMAL. R & R NR 4 HYD IM AND GROUND TEST PASS IAW AMM 29-11-42, WDM 27-62-11 & AIPC 29-11-42-01B, AP-32557. DMI 239827 CLOSED, PLACARD REMOVED.

More about the Boeing 747-46NF