Maintenance Flashcards
Acceptance Inspection
Shall be performed when the reporting custodian accepts an ATO aircraft.
EOC
Equipment Operability Codes from MESM
An EOC code is a three-character alphanumeric code that identifies the degree of degradation to mission capability and the system responsible for the degradation. The first character (alpha) is documented in NALCOMIS OOMA. The second and third characters (numeric) are computer generated from the first two positions of the WUC/UNS
A: FMC
B:
C: Command Control Communications Systems
D: Hawklink Capability
E: SUW Mission
F: ASW Mission
G: Ordnance System
H: SurvivabilitySystem
I: A/C Mission Support Systems
J: Extended Mobility or SAR Operations
K: Night Overwater and/or Shipboard Operations
L: Preventing IMC Flight
Z: Not Safely Flyable
A-Sheet
Aircraft Inspection and Acceptance Record 4790/141
Block 1: BUNO
Block 2: T/M/S
Block 3: Reporting Custodian
Block 4: Oxygen
Block 5: Fuel Grade and Fuel Quantity
Block 6: ENG OIL 1&2, APU and XSMN Consumption
Block 7: Dated by PIC at time of inspection.
Block 8: Remarks, Ordnance, Limitations, Special Equipment
Block 9: PC signature I have personally inspected this A/C IAW the applicable MRC/checklists. Any discrepancies noted have been entered on a work order. CNAF 4790/38(preflight/daily/TA/postflight mx record)
Block 10: Certification of safe for flight condition by personnel authorized by the commanding officer to release the A/C SFF. (Maintenance Material Control Officer, Maintenance Control Officer) others in MMP
Block 11: I have reviewed the discrepancy reports of the 10 previous flights, ensured proper filing of weight and balance data and accept this A/C safe for flight.
- For hotseat, ensure Julian date is correct and it says “HOTSEAT” in Block 8
RBA
Ready Base Aircraft Aircraft is FMC and is ready to fly? Mx has been completed and should be good to go but it hasn’t been tested.
AWP
Awaiting Parts
Shops
110: AD aviation machinist mate
220: AE aviation electricians mate
120: AM aviation structural mechanic
230: AO aviation ordnancemen
210: AT aviation electronics technician
13A: PR aircrew life support equipment
020: AZ aviation maintenance administration / Mx Control
040: QA
310: Line Shack
Programs
Tires and Wheel
Mx Safety
Laser Hazard Safety
Aircraft Armament Systems
Aircraft Life Support Systems
Aircraft Confined Space Program
Fuel Surveillance
Hydraulic Contamination
Control Oil Consumption and NOAP/JOAP
Corrosion Prevention and Control
FOD
Material control Maintenance control program manager
Tool Control Logs and records
Weight and Balance
Plane Captain Qualification
Phase Mx
Fuel Packet
Contains:
1348- Cadillac Chit: filled out on the ship and cross countries, can be used for ordering parts as well.
Air card, Pen, and Pencil
Conditional
Conditional inspections are inspections required due to an over limit condition, specific usage, or operational event. (unscheduled)
Post Terf inspection after unprepared landings. Post Dip after Dip Sortie. Hard landing.
Pre/Post Depot Level Inspection
Prior to and after reporting custodian sends/receives an A/C to/from on-site standard and special rework.
PnE
Planner and Estimator
FCF Profiles
A: Full systems check
B: Engine check
C: Controllability / drive train check
D: AFCS check
Special
Scheduled on a prescribed recurring interval other than daily, phase, major engine, or standard depot rework. (7, 14, 28 day or 60hr)
+- 3 days/+- 10% hours
Some MRCs are cut in half when underway to aid in corrosion prevention. (Fresh water washdown every 7 days underway instead of 14)
546 day is the worst special (takes apprx 5days)
Fresh Water wash down Underway
Waterwash is every 14 days normally but it’s every 7 days underway.
Daily
Inspects for defects to greater depth than the TA. Always completed before the TA. Valid for 72 hours after completion provided no flight or mx other than servicing occurs. May be flown for 24 hours beginning at rotor engagement of the first flight. 24 hours can not exceed the 72 hour expiration of the daily unless the expiration occurs during a mission.
*24 hours only starts at rotor engagement of the first flight that gets airborne. Penalty turns don’t count.
*When required for a cross-country flight, or when aircraft must be operated away from home base without qualified maintenance support for periods not exceeding 72 hours, the CO may authorize the pilot-in-command to conduct pilot inspection in lieu of a Daily inspection, certify servicing requirements are accomplished, and sign the A-sheet. On a case-by-case basis, Wings and MAGs may authorize an additional 24 hours (maximum of 96 hours), due to operational necessity. Accomplishing this rather than completing daily, TA and fuel sampling is sufficient for SFF.
Transfer Inspection
Shall be performed when a reporting custodian transfers an ATO A/C to an offsite FRC/commercial rework facility or to another operational unit.
E.g. we send an aircraft to HSM-41
Phase Inspection
Done sequentially at specified intervals (every 200+/- 10%).. All will require at minimum BC FCF profiles. -
D profile is the worst because of the work on the main rotor head. We only have one blade in the PUK and it could down a bird. (Also other parts…)
A Phase: Main Landing Gear (on jacks) tail rotor, ABCD, AC, A cards
B Phase: take one blade out and spindle apart, XSMN Oil Cooler ABCD, BD, B cards
C Phase: Tail Rotor ABCD, AC, C cards
D Phase: MRH, Spindles ABCD, BD, D cards PMI is every 36 months, Depot Level Mx? FRC (is I Level Mx?), replacing an engine.
PMC vs PMCS vs PMCM
PMC is Partially Mission Capable according to the codes found in the MESM.
PMCS means the aircraft is PMC awaiting a part from supply.
PMCM means the aircraft is PMC awaiting the maintenance to be completed.
Turnaround
Checks integrity, servicing and degradations. Valid for 24 hours from completion (based off fuel sampling time) unless flown and AC is shutdown and there is a HAC turnover or maintenance other than servicing is completed. (Unless shutdown is scheduled, CATM download)
*If the HAC turnover occurs during a hotseat the TA is postponed.
*Mx Control will determine if a TA need to be completed again depending on the mx performed.
*CO may authorize PIC to to perform pilot inspection, ensure servicing requirements accomplished and sign A Sheet in certification block when away from home without qualified mx personnel for periods not exceeding 72 hours. Accomplishing this rather than completing daily, TA and fuel sampling is sufficient for SFF.
*TA is not required between repetitive flight evolutions interspersed with ground periods such as PMC stops, hotseats, hot refueling or short stops for adjustments during FCFs.
Types of Maintenance
O level: Organizational Level
-O-level maintenance is basic maintenance performed by an activity on its assigned aircraft and equipment. O-level maintenance is organized to achieve quick turnaround of aircraft and equipment in order to optimize operational availability (Squadron)
I level: Intermediate Level (AIMD)
-The primary focus of I-level maintenance is to produce ready-for-issue (RFI) parts and ready-for-use (RFU) support equipment in sufficient quantities to support aircraft operations. (FRC)
D Level: Depot Level FRC vs PMI
-D-level maintenance and rework is performed by designated depot activities on aircraft, equipment and material requiring overhaul, upgrading, or rebuilding of parts, assemblies, subassemblies, and end items, including manufacture, modification, testing, and reclamation of parts. (Civilians)
AMSRR and AMCR
Aircraft Material Status Readiness Report
Aircraft Material Condition Report = Tracks hours, Downing Gripes, and Readiness
Zonal Inspection
General Inspection of a specific area. Swap out part, no TA/Daily but zonal?
IW on a MAF
In Work Period of time that the helicopter was being worked on. Sort of like a time card for checking in and out of work.
Releasing and Accepting Aircraft for Flight
Two of the most critical responsibilities of Maintenance Control are certifying and releasing an aircraft Safe for Flight (SFF) and the acceptance of the aircraft by the aircrew
HIT Checks
- Baseline Completed on the FCF (3 HIT Checks averaged out)
- Baseline compared to the Table TGT
- Positive Number if cooler, Negative if Hotter
- or – 20 deg on either side of the difference between baseline and table = Margin
Corrosion MAFs
Corrosion MAFs are created during inspections, DTA’s, Pilot Weeklys, Pre-flight and Postflight. BM is for any bare metal. C/P is Corrosion Prevention. All corrosion gripes (MAFs) must be completed within 28 Julian days (or next inspection) or the aircraft is down (NMCM).
Who can service an aircraft?
All PQMs and aircrewmen qualified in model are authorized to perform
servicing and handling of the aircraft when qualified maintenance personnel
are not available.
Personnel Required for Inspections
Daily – 5 (crack the tail)
TA – 1 person
Monthly Plans
Monthly Maintenance Plan (MMP): contain a maintenance plan to accomplish major scheduled maintenance for the next three months
Monthly Training Plan (MTP): contains all currently designated plane captains and the due date of their next semi-annual requalification.
Monthly Personnel Plan (MPP):
(1) Schedule of command-held maintenance training (in-service training required for their rate/MOS and pay grade, recurring training requirements; NAMP Indoctrination; NAMP Refersher Training, NAVOSH training, etc.)
(2) Schedule of confirmed formal courses and attendees.
(3) Recertification or requalification requirements (Plane Captain monitor, Egress/Explosive Systems check-out, etc.)
(4) Current list of QPT, AMSTRP, PQS, and JQR qualifiers.
(5) List of personnel currently designated for specific duties
DSR vs AMCR
DSR: Daily Status Report
-Report on the material condition of aircraft, mission systems, and
other major equipment.
QAO Personnel
Quality Assurance Representative (QAR)
-E-6 or above
-QARs are permanently assigned to the Quality Assurance Division (outside any work division)
Collateral Duty Quality Assurance Representative (CDQAR)
-E5 and above
-QA belonging to a specific work center; used when something is critical to SFF (have the ability to down an aircraft)
Collateral Duty Inspector (CDI)
-E4 and above
-CDIs inspect all work and comply with the required QA inspections during all maintenance actions performed by their production work center
Mission Essential Subsystem Matrix (MESM)
Provides Equipment Operational Codes (EOC) to determine the PMC status of an aircraft
A MESM provides guidance for determining subsystem, capability, function, and mode interrelationships as they relate to aircraft mission capability.
Located in Wing Portal
What is the primary maintenance pub?
NAMP 4790.2D CH-1
(Naval Aviation Maintenance Program)
High Time components waiver
During combat, operational commanders are authorized to defer scheduled maintenance of otherwise functional equipment. Combat operational commanders may also defer the replacement of high time components, with the exception of LCF or structural life limited components (those items whose disposition is “RETIRE” in the PMIC).
OOMA
Optimized Organizational Maintenance Activity
Maintenance Officer Positions
MMCO - Luke (MMPs)
AMO - Liz (training/personnel)
MCO - Darlene (supplies)
Form F’s
Aircraft Weight and Balance Sheets
Good for 180 days; needs to be redone if more than 10% of the aircraft is painted
PEMA
Portable Electronic Maintenance Aid
Laptops that the maintainers use
IETMs
Integrated Electronic Technical Manuals
Software within the PEMA; specific for each airframe
How to check an In Process MAF?
- Click on the AADB.
- Find an open MAF.
- Double click on MAF.
- Right click on new window.
- Select In Process (?)
Signatures on A-sheet
Block 9: PC signature
-“I have personally inspected this A/C IAW the applicable MRC/checklists. Any discrepancies noted have been entered on a work order.”
Block 10: Certification of safe for flight condition by personnel authorized by the commanding officer to release the A/C SFF. (Maintenance Material Control Officer, Maintenance Control Officer) others in MMP
Block 11: PIC
-“I have reviewed the discrepancy reports of the 10 previous flights, ensured proper filing of weight and balance data and accept this A/C safe for flight.”
MRCS Codes
TA = 300
Daily = 100
ATAF
All Tools Accounted For
Happens 5x minimum
Pub for verifying vibes during FCF
VIB 100/200
Who signs off FOD vs Critical FOD searches?
FOD:
Critical FOD: MO or AMO / DET OIC or MO
What to look for in Aircraft Binder/ OOMA?
What is reviewed prior to an aircraft being released for flight?
What drives an FCF?
NAMP: Upon completion of standard rework conducted by the rework facility (AIMD).
• When a reporting custodian accepts a newly assigned aircraft. (Inter-Wing)
• When an aircraft has not flown in 30 days or more.
• Upon completion of phase inspection when dictated by:
• Corrective action(s)
• MRCs
• Removal, disassembly, etc., of certain components
Fuel Packet Contents
IRAC vs TD
IRAQ: Immediate Rapid Aircraft Change - change to a maintenance publication
TD: Technical Directive - change to an aircraft practice or the aircraft itself
OOMA Black / Blue / Red Text
Black - Up for Flight (U)
Blue - Partial Downer (P)
Red - Down for Flight (D)
Aircraft rinse vs wash
Rinse: Every hour on the flight deck it gets washed down with fresh water
Wash: Soap used to clean aircraft every 14 days / 7 days underway
ATAF Signal
PC patting the side of their hip
What is the minimum amount of ATAF checks required?
5
- Tool Room Checkout
- Before leaving space to conduct MX
- Before conducting MX
- After conducting MX
- Returning to tool room
PUK
Pack Up Kit - Equipment required for going on a detachment
What requires Operational Necessity (NAMP)
DECOS
- One time deferral of activities that desire deviation of Routine TDs that do not require work to be redone
- Extending a Daily Inspection away from home to 96 hours (Type Wing or MAG Commander)
- Calibration intervals of non-safety related aviation TMDE may be extended by the TYCOM
- Operational Commanders may authorize deferral of compliance for Immediate Action, Urgent Action, and Routine Action TDs, if required due to combat operational necessity
- One-time deviation in excess of the high-time limits for Special Inspections (10%/3 days)
What drives an A Pro FCF?
- Aircraft acceptance
- 30-dy no-fly
FAL
Focus Area List
List of top corrosion degraders as documented during level 3 repairs.
Broken vs Missing Tool
Broken: Tool is not working correctly, but all parts are accounted for
Missing: Location of part(s) is/are unknown; requires FOD search
