SDR DHL200074002

Service difficulty report · Line · Boeing 7272Q9

Difficulty date: May 3, 2000
Submitted: May 4, 2000
Operation: Air carrier
Aircraft: N740DH
Make and model: Boeing 7272Q9
Aircraft serial: 21930
Aircraft time: 40,641 hours, 33,878 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Part number: 27624H01212
Condition: Broken
Location: Hydraulic Sys
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: A

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

What was found

NR 1 A SYSTEM PUMP LIGHT ILLUMINATED AFTER TAKEOFF, HYD PRESS 3000 PSI, HYD QTY ZERO. SOON AFTER NR 2 PUMP A SYSTEM LIGHT ILLUMINATED AS HYD PRESS DECREASED. FOUND NR 1 PUMP CASE DRAIN LINE BROKEN. REPLACED CASE DRAIN LINE PER MM 29-11-33, REPLACED NR 1 HYD PUMP. GROUND RAN, LEAK AND OPS CHECK SERVICEABLE.

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