Service difficulty report · Frame · Boeing 737924ER

Difficulty date
June 27, 2019
Submitted
June 30, 2019
Operation
Air carrier
Aircraft
N75436
Make and model
Boeing 737924ER
Aircraft serial
33531
Aircraft time
33,902 hours, 11,659 cycles
Part
Frame
Part number
146A128567
Condition
Cracked
Location
Bs 867
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

FUSELAGE FRAME CRACKED STA.867 BETWEEN S-27L AND S-27R MATERIAL VERIFIED FOR -1 REPAIR J AS .080 7075-0 CLAD PO 8852031 PER AVO ESC190613-0436-1 STEP 4. ED PART PER AVO ESC190613-0436-1. STEPS 4 AND 6. FABRICATED -1 REPAIR J. PERFORMED FLOURESCENT PEN. INSP. ON FORM VERIFIED PO#8852031 AND METAL .80-7175-0 C/W FPI IAW SOPM 20-20- 2 ON FORMED AREA. NO DEFECTS NOTED. CW ITEM #6 FPI PER AVO ESC190613-0436-1. COMPLETED STEPS 1, TRIM OUT FRAME WEB,ALSO COMPLETED STEP 3. PER AVO ESC190613-0436-1A STEP A.1B. HFEC INSPECT FRAME WEB TRIM OUT. OF REMOVED FASTENER AND INSULATION STUD HOLES. PER AVO ESC190613-0436-1A STEP A.2 PERFORM HFEC HOLE PROBE INSP. PER CURRENT AVO ESC190613-0436-1A STEP B.1 FABRICATED -1 REPAIR ANGLE FROM CLAD .071 7075-0 PO 5417049317. IR ANGLE AFTER FORMING. PER AVO ESC190613-0436-1A STEP B.1 PERFORM PEN. INSP. OF -1 REPA STEP A.1.B. PERFORMED .040 INSURANCE CUT OF FRAME PER AVO ESC190613-0436-1B PER AVO ESC1903613-0436-1C STEP B.1 FORMED REPAIR ANGLE -1 FROM CLAD .071 7075-0 PO 5417049317. VERRIFED FRAME WEB TRIMOUT PER A.1A, HFEC ACCOMPLISHED PER A.2. NO DAMAGE NOTED,FORMED REPAIR ANGLE-1 FROM CLAD .071 7075-0 PO 5 417049317 STEP B.1., MATERIAL VERIFICATION ACP., FPI ACCOMPLISHE D PER STEP B.2.1 INS CUT PER A.1.B., PER AVO ESC190613-0436-1B. REPAIR ANGLE -1 HEAT TREATED TO -T62 CONDITION AFTER FORMING REFERENCE HEAT TREAT FORM 43-0150 NEED TO PERFORM FPI OF -1 ANGL E PER AVO ESC190613-0436-1C STEP B.1 NOTE. C/W FPI IAW SOPM 20-20-02 PER AVO ESC190615-0436-1C S