# JASC 7713: Manifold Pressure (MP) Indicating

- Type: JASC system/component code (FAA)
- ATA chapter: 77 Engine Indicating
- Title in the code table: MANIFOLD PRESSURE (MP) INDICATING
- Service difficulty reports: 77
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=66
- Page: https://openairdocs.org/jasc/7713

## What it covers

The reciprocating engine manifold pressure (MP) indicating system including the indicator and sensor. Typical parts are lines, hoses and fittings.

## Service difficulty reports (77, newest 50)

- [SDR 2026FA0000678](https://openairdocs.org/sdr/2026FA0000678), Sep 2, 2026: Diamon DA62. HOSE. RUPTURED. ABOUT 10 MIN AFTER TAKEOFF AND AT ABOUT 10,000 FT MSL THE LEFT ENGINE INDUCTION HOSE P/N D67-9081-26-01 FAILED BY SPLITT (N81FP)
- [SDR YENA2026081400677](https://openairdocs.org/sdr/YENA2026081400677), Aug 12, 2026: Airbus A320232. RELAY. FAILED. FLT 1439, BOS-AUS (AIRTURN BACK TO BOS). NR 2 ENG EPR MODE FAULT ON CLIMB OUT AT APPROX FL 230. REPLACED P2/T2 PROBE NO  (N621JB)
- [SDR 2026FA0000191](https://openairdocs.org/sdr/2026FA0000191), Mar 18, 2026: Cirrus SR22T. MANIFOLD. ERRATIC. IN CRUISE PILOT REPORTED THAT THE ENGINE BEGAN SURGING, RECEIVED A FLASHING CAS MESSAGE (UNCERTAIN WHAT THE MESSAGE WAS) (N788BM)
- [SDR CALA2025010201752](https://openairdocs.org/sdr/CALA2025010201752), Dec 31, 2024: Boeing 75733N. SENSOR. FAULTED. R ENG SPEED CARD AND R ENG BLEED OFF AND CTR R FUEL PUMP OFF AT SAME TIME AS RT ENG N3 FLUCTU PER CREW DEBRIEF CTR R FUE (N78866)
- [SDR YV3R2023051000564](https://openairdocs.org/sdr/YV3R2023051000564), Apr 12, 2023: Robsin. GAUGE. INOPERATIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE P/N: A600-4 WAS INOPERATIVE.
- [SDR HALA2022080300138](https://openairdocs.org/sdr/HALA2022080300138), Aug 2, 2022: Airbus A300*. NONE. NONE. ETOPS - AT 8000' "ENG 2 FADEC SYS FAULT THRUST LEVER 2 NOT ABOVE IDLE" THRUST LEVERS WERE IN CL DETENT // PERFORMED INSP (N208HA)
- [SDR YV3R2022021600518](https://openairdocs.org/sdr/YV3R2022021600518), Jan 27, 2022: Robsin R22BETAII. NONE. NONE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE (M.A.P) P/N: A600-5 INDICATED INCORRECT READING.
- [SDR YV3R2021081000476](https://openairdocs.org/sdr/YV3R2021081000476), Jul 22, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WAS FAULTY.
- [SDR YV3R2021043000452](https://openairdocs.org/sdr/YV3R2021043000452), Apr 20, 2021: Robsin R44. GAUGE. DEFECTIVE. REVISED UNIQUE CONTROL #: CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WILL NOT DISPLAY CORRECT PRESSURE. (N988DC)
- [SDR 2021FA0000119](https://openairdocs.org/sdr/2021FA0000119), Apr 20, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WILL NOT DISPLAY CORRECT PRESSURE. (N988DC)
- [SDR XGNA2021041400011](https://openairdocs.org/sdr/XGNA2021041400011), Apr 14, 2021: Cessna 402B. ENGINE. POWER LOSS. TAKEOFF WAS NORMAL 34.5” MP, 2700 RPM, FUEL FLOW IN THE WHITE ARC. DURING CLIMB POWER SETTINGS RIGHT ENGINE WOULD NOT MA (N3378Q)
- [SDR YV3R2021031200445](https://openairdocs.org/sdr/YV3R2021031200445), Mar 1, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 WAS INTERMITTENT IN OPERATION.
- [SDR YV3R2021022200437](https://openairdocs.org/sdr/YV3R2021022200437), Feb 16, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 INDICATING NEEDLE STUCK.
- [SDR YV3R2021022200436](https://openairdocs.org/sdr/YV3R2021022200436), Feb 16, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 NEEDLE INDICATING INCORRECTLY.
- [SDR YV3R2021012200427](https://openairdocs.org/sdr/YV3R2021012200427), Jan 20, 2021: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-7 NEEDLE INDICATION WAS LAGGING.
- [SDR YV3R2020102900375](https://openairdocs.org/sdr/YV3R2020102900375), Oct 21, 2020: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED M.A.P GAGE P/N: A600-4 WAS ERRATIC, AND SLOW TO CHANGE DURING POWER CHANGES. (N299HE)
- [SDR YV3R2020102900374](https://openairdocs.org/sdr/YV3R2020102900374), Oct 21, 2020: Robsin R44. GAUGE. FAULTY. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE (MAP) GAGE P/N: A600-7 INDICATED INCORRECTLY (FAULTY READING).
- [SDR YV3R2020072400304](https://openairdocs.org/sdr/YV3R2020072400304), Jul 20, 2020: Robsin R22BETAII. GAUGE. INACCURATE. CUSTOMER REPORTED M.A.P GAGE P/N: A600-5 IS READING LOW.
- [SDR YV3R2020070800299](https://openairdocs.org/sdr/YV3R2020070800299), Jun 29, 2020: Robsin R22BETAII. GAUGE. READS HIGH. CUSTOMER REPORTED MAP GAGE P/N: A600-5 READS HIGH.
- [SDR YV3R2020062700288](https://openairdocs.org/sdr/YV3R2020062700288), Jun 15, 2020: Robsin R44. GAUGE. FAULTY. CUSTOMER REPORTED M.A.P GAGE P/N: A600-4 HAD A FALSE INDICATION.
- [SDR YV3R2020060300278](https://openairdocs.org/sdr/YV3R2020060300278), May 11, 2020: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 INDICATION WAS OUT OF LIMITS.
- [SDR YV3R2020052900271](https://openairdocs.org/sdr/YV3R2020052900271), May 1, 2020: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-7 NEEDLE IS STUCK INDICATING 10". (N888SN)
- [SDR YV3R2020052900270](https://openairdocs.org/sdr/YV3R2020052900270), May 1, 2020: Robsin R44. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE P/N: A600-4 WAS ERRATIC AND LAGS.
- [SDR YV3R2020050900250](https://openairdocs.org/sdr/YV3R2020050900250), Feb 22, 2020: Robsin R22BETAII. GAUGE. STICKING. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE P/N: A600-5R STICKS AND INACCURATE IN READING PRESSURE.
- [SDR YV3R202002100238](https://openairdocs.org/sdr/YV3R202002100238), Jan 28, 2020: Robsin R44. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4R WAS DEFECTIVE. RHC - BENCH CHECKING FOUND M.A.P GAGE INACCURATE DO
- [SDR YV3R2020012820235](https://openairdocs.org/sdr/YV3R2020012820235), Jan 18, 2020: Robsin R44. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD PRESSURE GAUGE HAS AN INACCURATE READING.
- [SDR YV3R2019092400196](https://openairdocs.org/sdr/YV3R2019092400196), Sep 18, 2019: Robsin R44. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (MAP) P/N: A600-7 NEEDLE STICKS, JUMPS, AND READS LOW. (N250TH)
- [SDR YV3R2019092000189](https://openairdocs.org/sdr/YV3R2019092000189), Sep 14, 2019: Robsin R44. GAUGE. MALFUNCTIONED. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 IS ERRATIC/MALFUNCTIONING.
- [SDR YV3R2019081522163](https://openairdocs.org/sdr/YV3R2019081522163), Aug 2, 2019: Robsin R44. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAUGE IS NOT READING CORRECTLY.
- [SDR YV3R2019080220156](https://openairdocs.org/sdr/YV3R2019080220156), Jul 29, 2019: Robsin R22BETAII. GAUGE. MALFUNCTIONED. CUSTOMER REPORTED MANIFOLD PRESSURE ABSOLUTE GAGE P/N: A600-5 IS NOT READING CORRECTLY AND SLOW TO REACT.
- [SDR YV3R2019071800140](https://openairdocs.org/sdr/YV3R2019071800140), Jul 3, 2019: Robsin R22BETAII. LINE. BROKEN. CUSTOMER REPORTED MANIFOLD PRESSURE LINE ASSEMBLY P/N: A740-1 BROKEN. (N999FR)
- [SDR YV3R201906200122](https://openairdocs.org/sdr/YV3R201906200122), Jun 10, 2019: Robsin R44. GAUGE. SLUGGISH. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE (MAP) GAGE READS 1 INCH LOW AND SLUGGISH.
- [SDR YV3R201906200121](https://openairdocs.org/sdr/YV3R201906200121), Jun 10, 2019: Robsin R44. GAUGE. SLUGGISH. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE (MAP) GAGE IS SLUGGISH.
- [SDR YV3R2019060520109](https://openairdocs.org/sdr/YV3R2019060520109), May 30, 2019: Robsin R44. GAUGE. READS LOW. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (MAP) P/N: A600-7 READS LOW. (N4053T)
- [SDR YV3R2019052400095](https://openairdocs.org/sdr/YV3R2019052400095), May 23, 2019: Robsin R44. GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE (MAP) GAUGE P/N: A600-7 IS DEFECTIVE. (N7QH)
- [SDR YV3R2019032700059](https://openairdocs.org/sdr/YV3R2019032700059), Mar 25, 2019: Robsin R44. PRESSURE GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE UNDERESTIMATES AT 1.5" (INCH).
- [SDR YV3R2019031600044](https://openairdocs.org/sdr/YV3R2019031600044), Mar 8, 2019: Robsin R44. GAUGE. FAULTY. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE, P/N: A600-4, WAS FAULTY.
- [SDR YV3R2019012200027](https://openairdocs.org/sdr/YV3R2019012200027), Feb 15, 2019: Robsin R22BETAII. GAUGE. INACCURATE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE (MAP) GAGE IS INACCURATE AND SLOW TO RESPOND. (N999FR)
- [SDR YV3R2019021100015](https://openairdocs.org/sdr/YV3R2019021100015), Jan 1, 2019: Robsin R44. GAUGE. INOPERATIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE IS INOPERATIVE, NEEDLE GETTING STUCK.
- [SDR VRXR20180822002](https://openairdocs.org/sdr/VRXR20180822002), Aug 8, 2018: Beech 58. STUD. PULLED. STUD PULLED OUT OF TACH DRIVE HOUSING COVER ALLOWING OIL TO LEAK OUT ONTO EXHAUST CAUSING SMOKE AND THE FLIGHT TO RETURN (N858PB)
- [SDR NI6R201708230045](https://openairdocs.org/sdr/NI6R201708230045), Aug 23, 2017: Lkheed P2V5F. OIL SYSTEM. LOW PRESSURE. IN LOADED CRUISE FLIGHT, RIGHT RADIAL ENGINE LOST MANIFOLD PRESSURE FOLLOWED BY A REAR OIL SYSTEM CHIP LIGHT. ENGINE WAS (N1386C)
- [SDR N3XR2016111700001](https://openairdocs.org/sdr/N3XR2016111700001), Nov 5, 2016: Bbavia 8KCAB. GAUGE. CONTAMINATED. THE PILOT REPORTED SLUGGISH MAP READINGS.INVESTIGATION REVEALED THAT THE MAP LINE HAD RESIDUAL FLUID IN IT AND THAT THIS (N199SA)
- [SDR N3XR20160609003](https://openairdocs.org/sdr/N3XR20160609003), Jun 9, 2016: Bbavia 8KCAB. INDICATOR. CONTAMINATED. AFTER MANY HOURS OF AEROBATIC FLIGHT, SMALL TRACES OF OIL MIGRATED INTO THE MAP LINE BEHIND THE CYLINDER. EVENTUALLY THI (N199SA)
- [SDR HYIA20150624001](https://openairdocs.org/sdr/HYIA20150624001), Jun 17, 2015: Cessna 402C. LINE. FAULTY. PILOT REPORTED LT ENG NOT RESPONSIVE TO THROTTLE CHANGES, DEVELOPING AMBIENT PRESS. ENG SHUTDOWN IN FLIGHT. INSPECTED TH (N2611X)
- [SDR CA131129002](https://openairdocs.org/sdr/CA131129002), Nov 27, 2013: Cessna 182T. ADAPTER. CLOGGED. (CAN) RESTRICTOR ORIFICE IN MANIFOLD PRESSURE INDICATOR LINE ADAPTOR AT CYLINDER NR 3 FOUND PLUGGED. ORIFICE CLEANED.
- [SDR XGNA20130621001](https://openairdocs.org/sdr/XGNA20130621001), Jun 11, 2013: Beech A36. PRESSURE SENSOR. INTERMITTENT. MANIFOLD PRESURE SENSOR BECAME INTERMITTENT. (N236CH)
- [SDR CA130611001](https://openairdocs.org/sdr/CA130611001), Jun 5, 2013: Piper PA44180. LINE. BROKEN. (CAN) THE RT ENGINE MANIFOLD PRESSURE GAUGE WENT TO 30" AND WOULD NOT MOVE EVEN WITH FULL POWER. MAINTENANCE FOUND THE M
- [SDR CA120723018](https://openairdocs.org/sdr/CA120723018), Jul 19, 2012: Cessna A185F. LINE. CUT. (CAN) PILOT CAME IN REPORTING LOWER ENGINE POWER AND HIGHER THAN NORMAL MANIFOLD PRESSURE AT LOW POWER SETTINGS, AME FOU
- [SDR HYIA818ANMAP1105](https://openairdocs.org/sdr/HYIA818ANMAP1105), Nov 5, 2010: Cessna 402C. LINE. BROKEN. CREW REPORTED, AFTER LEVELING AT 4000 FT, IN CRUISE CONFIGURATION, POWER WAS REDUCED TO 26" OF MANIFOLD PRESSURE. LT ENG (N818AN)
- [SDR 2010FA0000732](https://openairdocs.org/sdr/2010FA0000732), Jul 6, 2010: Diamon DA40. SENSOR. FAILED. INTIALLY ERRATIC, AND THEN CONCISTENTLY LOW MANIFOLD PRESSURE READINGS ON G1000 DURING AND AFTER FLIGHT. PROBLEM APPEARE (N316BV)

All 77: https://openairdocs.org/jasc/7713/reports.md

## Other codes in chapter 77

- [JASC 7700](https://openairdocs.org/jasc/7700): Engine Indicating System (705 reports)
- [JASC 7710](https://openairdocs.org/jasc/7710): Power Indicating System (191 reports)
- [JASC 7711](https://openairdocs.org/jasc/7711): Engine Pressure Ratio (EPR) (456 reports)
- [JASC 7712](https://openairdocs.org/jasc/7712): Engine BMEP/Torque Indicating (1,239 reports)
- [JASC 7714](https://openairdocs.org/jasc/7714): Engine RPM Indicating System (1,357 reports)
- [JASC 7720](https://openairdocs.org/jasc/7720): Engine Temperature Indicating System (695 reports)
- [JASC 7721](https://openairdocs.org/jasc/7721): Cylinder Head Temperature (CHT) Indicating System (62 reports)
- [JASC 7722](https://openairdocs.org/jasc/7722): Engine EGT/TIT Indicating System (1,198 reports)
- [JASC 7730](https://openairdocs.org/jasc/7730): Engine Ignition Analyzer System (52 reports)
- [JASC 7731](https://openairdocs.org/jasc/7731): Engine Ignition Analyzer (15 reports)
- [JASC 7732](https://openairdocs.org/jasc/7732): Engine Vibration Analyzer (237 reports)
- [JASC 7740](https://openairdocs.org/jasc/7740): Engine Integrated Instrument System (53 reports)
- [JASC 7797](https://openairdocs.org/jasc/7797): Engine Indicating System Wiring (592 reports)

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