What it covers
The unit which interprets and indicates by oscilloscope the condition of ignition systems on reciprocating engines.
Service difficulty reports · 15
Reports filed under 7731, newest first.
| 2014 | 1 |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2019 | 1 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 1 |
SDR IPXA202305308762Unknown · unknown*SDR FILED OPEN* *DIVERSION* HIGH N1 VIBE INDICATION IN LEFT ENGINESDR HALA2022121200307Rccb · faultedETOPS-DUE TO N1, N2 & BB VIBRATION REPORTED ANOMALIES ON NR 1 ENGINE. REMOVED AND REPLACED THE NR 1 ENG RCC IAW AMM 77-32-13. CHECKED OK. OK FOR SERVICE.SDR N6WA2022091901Engine · vibrationENG 2 VIB N1 AMBER RANGE (1.9). R AND R FAN BLADE PINS AND BUMPERS IAW CRJ 550 AMM 72-21-02, PERFORMED ENGINE RUNS AT IDLE AND 1.0MIL OBSERVED, RUN AT TOGA 3.7 -3.8 OBSERVED N1 VIBRATION. ENGINE RUNS AND BALANCE TRIM IAW AMM 71-00-00. OPS AND N1 VIBE CHECK GOOSDR UIEA2022041000281Cable · shorted#1 ENGINE VIB INDICATION INTERMITTENT T/S PER W/D ; 77-31-11. REPLACED SHORTED OUT L ENG T677 FAN ACCELEROMETER CABLE IAW SWPM 20-10-11 W/D 77-31-11 AVM. SYS OPS TEST OK IAW AMM 77-31-00/501. L ENG ; DRY RUN UP / GROUND TEST #2 OK IAW AMM 71-00-00/795. MSDR CALA2022020700338Engine · vibrationNO 1 ENG VIBE 2.6-3.0 NO VIBE FELT 2.6-3.0 HIGHEST IND FL390 PER PREVIOUS UPDATE CODE B7 ON AVM CHECKED WIREING SECURITY AT ENGINE 1 TRANDUCER, FOUND ALL SECURE THIS LOG HAS BEEN LOCKED BY THE TOMC MGR DUE TO EMERGENCY UNLOCKED FOR MX UPDATE DECLARATION. L AVMSDR HAL2022F00000Computer · defectiveETOPS - #1 ENGINE VIBRATION MONITOR INOP // REPLACED CSU P/N 065-50001-0200 S/N OFF 04253. NO HELP. PER A330 AMM 27-51. (PAUL SERBICK 576703). REMOVED AND REPLACED #2 SFCC PER A330 AMM 27-51-34 OPS CHECK NORMAL NO FAULTS DISPLAYED. PERFORMED BITE TEST ON #1 ANSDR UIEA2021110302331None · noneLEFT / #1 ENGINE "VIB" INDICATION BETWEEN 1 AND 4 ON STATUS PAGE DURING DEPARTURE. FLUCTUATIONS WERE ALSO SLIGHTLY FELT.(<P>RAN #1 ENGINE HIGH POWER RUN VIBRATION SURVEY PER B767 AMM 71-00-00-735-370-H03. AT IDLE. VIBE 0.7, EGT 319, FF 1.3 AT MAX POWER SETTINGSDR UIEA2021090401955Accelerometer · faulted#2 ENG EXCESSIVE VIBRATIONS DURING INITIAL CLIMB ON (LPT), RANGING FROM 0.5 TO 5.0(<P>TRANSFERRED TO MDDR 153024 IAW MEL 77-31-01-01, CAT C.</P> / <P>REMOVED AND REPLACED REAR FRAME ACCELEROMETER. IAW AMM 77-31-02. IDLE RUN. IAW AMM 71-00-00. BY INDICATION GOOSDR UIEA2021071001508Indication Sys · false indicationINDICATION ON RIGHT ENG FAN VIBRATION FLUCTUATING BETWEEN 1.0 < 3.5 ON CLIMB OUT FOR A FEW MINS. NO ABNORMAL VIBRATION NOTED/ FELT.(<P>TRANSFERRED TO MDDR 149953 PER MEL 77-31-01-01, CAT "C", DUE DATE: 20JUL21. DISP: LC @ 17:25Z.</P> / <P>CVG MX, 13JUL, LP 145SDR UIEA2021020400229Engine · vibrationABOVE FL 250 KIAS AIRFRAME VIBRATION WITH LOW TONE HUMMING, OCCURS CONTINUOUSLY THROUGHOUT THE FLIGHT DURING CLIMB. N1 (R) AT 1.4 UNITS VIBRATION.(C/W AIRFRAME VIBRATION CONDITIONAL INSPECTION PART 2 77-31-02 FOR ENG 2. LOCKS AND RING SECURE. PERFORMED VISUSDR UIEA2019121326064Warning Message · illuminatedON THE CLIMB, L/H ENG DISPLAYED 3.5 VIB FAN AT CLIMB POWER (104.1). EVENT RECORD WAS PUSHED. (<P>PERFORMED FIM 71-05 FT 853 UP TO BLOCK 56. CONTINUE THE ENGINE TO SERVICE, MONITOR THE ENG VIB ON SUBSEQUENT FLIGHTS. MCC NOTIFIED.</P>)SDR UIEA2017031700360Accelerometer · malfunctionedON CLIMB OUT LT ENG VIBRATION INDICATOR FAN 4.1. INSTALLED ALT ACCELEROMETER IAW AMM 77-31-01. ACCOMPLISHED FAN LUBE IAW AMM 72-31-02. ENG RUN IAW AMM 71-00-00 FAN VIBRATION CHECKED GOOD.SDR ASMF201511005Unknown · vibrationCAPTAIN REPORTED THAT DURING CLIMB, THE LT ENG VIBRATION REACHED 4.2 UNITS. PERFORMED FIM 71-05 TASK 808 PROCEDURE, NO DAMAGES WERE FOUND, TESTED CORRECT. AS PRECAUTIONARY ACTION, REPLACED THE VIBRATION MONITOR IAW AMM 77-31-03-401 & TRIM BALANCE WAS PERFORMSDR FDEA201509182900Accelerometer · failedLEFT ENG BREAD BAND VIBRATION INDICATOR ENTERED & REMAINED IN AMBER BAND. CREW CONDUCTED COMPULSORY LT ENG SHUTDOWN IAW QRH. CREW REPORTED THAT THEY DIDN'T FEEL ANY VIBRATION. EICAS MX MSGS LT ENG BB VIB & LT ENG VIB BITE PRESENT, SUSPECTED INDICATION. R &SDR 2014FA0000197Transducer · intermittentPILOT REPORTED AN INTERMITTENT OIL PRESSURE GAUGE. MECHANIC TROUBLESHOT SYSTEM, & INSTALLED A NEW OIL PRESSURE TRANSDUCER. PERFORMED GROUND OPS CHECK. OPS CHECKED SATISFACTORY.
Other codes in chapter 77 · 13
7700Engine Indicating System7710Power Indicating System7711Engine Pressure Ratio (EPR)7712Engine BMEP/Torque Indicating7713Manifold Pressure (MP) Indicating7714Engine RPM Indicating System7720Engine Temperature Indicating System7721Cylinder Head Temperature (CHT) Indicating System7722Engine EGT/TIT Indicating System7730Engine Ignition Analyzer System7732Engine Vibration Analyzer7740Engine Integrated Instrument System7797Engine Indicating System Wiring