What it covers
The instrument or warning lamp which indicates, senses, or transmits the pressure of engine lubricating oil available at the engine or when the pressure is improper for the conditions. This code is also used for discrepancies invloving oil pressure regulation. Typical parts are transducer, pressure switch, transmitter, pressure regulator, indicator, case, dial, needle, lamp, etc.
Service difficulty reports · 1,875
Reports filed under 7931, newest first.
| 1995 | 125 |
|---|---|
| 1996 | 145 |
| 1997 | 166 |
| 1998 | 133 |
| 1999 | 108 |
| 2000 | 65 |
| 2001 | 115 |
| 2002 | 93 |
| 2003 | 68 |
| 2004 | 62 |
| 2005 | 84 |
| 2006 | 57 |
| 2007 | 57 |
| 2008 | 27 |
| 2009 | 38 |
| 2010 | 36 |
| 2011 | 61 |
| 2012 | 51 |
| 2013 | 66 |
| 2014 | 34 |
| 2015 | 24 |
| 2016 | 11 |
| 2017 | 19 |
| 2018 | 28 |
| 2019 | 35 |
| 2020 | 23 |
| 2021 | 42 |
| 2022 | 13 |
| 2023 | 13 |
| 2024 | 25 |
| 2025 | 29 |
| 2026 | 22 |
SDR CALA2026101920471Transmitter · faultedOIL PRESSURE INDICATING SYSTEM OIL PRESSURE (01=L ENG, 02=R ENG) READS PSI WITH ENGINE SHUT DOWN ENG 2 OIL HIGH PRESSURE IN CRUISE. OIL PRESSURE DIFFERENCE OF 20 PSI BETWEEN ENG 1 AN ENG 2 IN CRUISE AND DROPPED TO A 10-PSI DIFFERENCE DURING DESCENT.RMK PICTURESDR SWAA2026101985298Oil System · low pressureOIL QUANTITY ZERO. OIL PRESSURE DROP TO RED BOX SHUT DOWN ENG 2. EMER DECLARED, TRUCKS ROLLED. PASSENGERS WERE FINE. R & R #2 ENGINE REF. MT 771-00-01.SDR N6WA2026101503Pressure Switch · faultedRIGHT ENG OIL WARNING 26 K FT WITH PARAMETERS BOUNCING OIL QTY 87-79%, 61 TO 64 PSI AND TEMP 101 TO 104C. DEFERRED RT LOW OIL PRESSURE SWITCH IAW MEL 79-30-01A CAT A ON OCN 70105028.
See all 1,875 reportsOther codes in chapter 79 · 10
7900Engine Oil System (Airframe Furnished)7910Engine Oil Storage (Airframe Furnished)7920Engine Oil Distribution (Airframe Furnished)7921Engine Oil Cooler7922Engine Oil Temperature Regulator7923Engine Oil Shutoff Valve7930Engine Oil Indicating System7932Engine Oil Quantity7933Engine Oil Temperature7997Engine Oil System Wiring