Service difficulty report · Threshold · Bombdr DHC8402

Difficulty date
May 11, 2016
Submitted
May 23, 2016
Operation
Air carrier
Aircraft
N415QX
Make and model
Bombdr DHC8402
Aircraft serial
4081
Aircraft time
30,844 hours, 31,927 cycles
Part
Threshold
Part number
85329532001
Condition
Corroded
Location
Zone 200
Stage of operation
IN
How discovered
9
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

FOUND CORROSION ON THRESHOLD PLATE 85329532-001 FROM BS X 6.700 TO BS X 26.700 ON MCD. REMOVED THRESHOLD PLATE, PN 85329532-001 FROM X6.70 TO X26370 MCD LOWER SURROUND REF SRM 51-42-05. INSTALLED NEW THRESHOLD PLATE, PN 85329532-001, REF SRM 51-42-05, REPAIR -01. BLEND DAMAGE TO 0.090" MINIMUM REMAINING THICKNESS AT BOLT LOCATIONS OF THRESHOLD PLATE IAW SRM 53-20-23, REPAIR -01. REMAINING MATERIAL THICKNESS AT BOLT LOCATIONS IS 0.083" OUT OF LIMITS. RECEIVED THRESHOLD PLATE ASSY 85320686-001 ALTERNATE PN. LOCATED AND DRILLED NEW MCD THRESHOLD PLATE PN 85320686-00, REF SRM 51-40-07.