Service difficulty report · Circuit Board · Raythn HAWKER800XP

Difficulty date
May 15, 2001
Submitted
June 1, 2001
Operation
Air carrier
Aircraft
N801WB
Make and model
Raythn HAWKER800XP
Aircraft serial
258287
Part
Circuit Board
Condition
Defective
Location
Apu Control
Part time
2,867 hours
Stage of operation
IN
How discovered
C
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

DEEC/COMPUTER CIRCUITS (NR 1 AND NR 2) DESIGN DOES NOT UTILIZE THE OVERSPEED PROTECTION THAT THE DEEC IS CAPABLE OF PERFORMING. WHEN PILOT SELECTS THE OVERSPEED PROTECTION POSITION WITH THE COMPUTER SWITCH (NR 1 AND NR 2) THE PROTECTION WILL NOT BE ACTIVATED WITHIN THE DEEC. WIRE MISSING TO PROVIDE OVERSPEED CONDITION WHEN SELECTED TO OVERSPEED PROTECTION SWITCH POSITION. APU DOES NOT MATCH THE OPERATION OF THE COMPUTER.