As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO 1 ENGINE NO EGT ON START WITH R IGNITOR SELECTED. WITH LEFT IGNITOR SELECTED THE START WAS SUCCESSFUL. GROUNDED - YES. VERIFED 1 ENG R IGNITION INOP. REMOVED AND REPLACED R IGNITION EXCITER AND R IGNITION IGNITER PER B737-9 AMM 74-11-01 AND 74-21-02OPS TEST NORMAL.