Service difficulty report · Blade · Boeing 737890

Difficulty date
December 25, 2020
Submitted
December 29, 2020
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737890
Aircraft serial
35184
Aircraft time
50,534 hours, 15,307 cycles
Engine
Cfmint CFM567B27
Part
Blade
Part number
3400010380
Part serial
DE1743844
Condition
Deformed
Location
Nr 2 Eng Fan
Part time
20,226 hours, 8,087 cycles
Stage of operation
IN
How discovered
V
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 DISTORTION ON NR 2, NR 11 FAN BLADE, REF LP NR 6007945. GROUNDED-YES. PERFORMED B737-800 AMM 72-21-02-200-801-F00 LIMITS FOR BLADES DEFORMATION AREA K PARAGRAPH K (1) (H) FIG 606. FOUND DIA Q OUT OF LIMITS. REMOVED AND REPLACED FAN BLADE NR 11 AND NR 23, IAW AMM 72-21-02. FOUND FAN BLADE PLATFORM BETWEEN FAN BLADE NR 10 AND NR 11 DAMAGED. INSPECTED SURROUNDING BLADES PLATFORMS AND SPACERS, IAW AMM 72-21-02, NO OTHER DAMAGE/DEFECTS NOTED. INSTALLED NEW PLATFORM, IAW AMM 72-21-02. PERFORMED ENGINE VIBRATION SURVEY, IAW AMM 72-71-00-00.