N473AC
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| Air Center Helicopters, Inc. (MHNA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
10 reports on file, 2010-11-30 – 2011-02-17.
Part: SKIN — DENTED (BS 1655 S24-25R) · airframe 59,116 hrs · 20,705 cycles
RT, EXTERNAL FUSELAGE AT STA 1655, BETWEEN STR 24R & 25R, HAS A DENT. DENT FOUND OUT OF LIMITS PER SRM 53-00-01, FIG.101, DETAIL 3, PG.104. CLEANED DAMAGED SKIN PER SRM 53-00-01 AT RH EXTERNAL FUSELAGE BY BS 1655, BETWEEN S24-25R. FABRICATED A REPAIR DOUBLER AND INSTALLED PER SRM 53-00-01, REPAIR NR 16, AT BS 1655, BETWEEN S24-25R. THIS IS A CAT. "B" MAJOR REPAIR WITH THE FOLLOWING TRACKING; INITIAL INSPECTION AT 37,000 FC, THEREAFTER EVERY 3,000 FC.
Part: BULKHEAD — GOUGED (LT PYLON) · airframe 59,116 hrs · 20,705 cycles
LT PYLON AFT BULKHEAD LOWER RT CORNER HAS A GOUGE. COMPLIED WITH EA F-5450-146255; BULKHEAD REPAIRED USING PARTS FABRICATED. REPAIR IS CLASSIFIED AS A CAT. "A" MAJOR.
Part: FITTING — CHAFED (LT PYLON BLKHD) · airframe 59,116 hrs · 20,705 cycles
(997FD/ 473AC) LT PYLON REAR BULKHEAD, LT LOWER CORNER IS CHAFED. COMPLIED WITH EA F-5450-146255: NACELLES/PYLONS-AD2003-18-05, EO F-5450-7-5010, NR 1 ENGINE STRUT AFT BULKHEAD REPAIR USING PARTS FABRICATED. REPAIR IS CLASSIFIED AS A CAT. "A" MAJOR.
Part: FLOORBEAM — CORRODED (BS 1681) · airframe 59,116 hrs · 20,705 cycles
STA 1681, FLOORBEAM UPPER CAP LOWER SIDE IS CORRODED AROUND FLOOR PANEL HOLES. REMOVED DAMAGE IAW SRM. CORROSION DETERMINED TO BE OUT OF LIMITS IAW SRM 53-00-51, FIG 101, DETAIL 6, P 103; ORIGINAL MATERIAL .156", REMAINING - 090", LOSS - .066". FABRICATED NEW FLOORBEAM IAW DWG 146N5314. TREATED/PRIMED AND TOP COATED NEW FLOORBEAM IAW SRM 51-20-01/AMM 51-21-00-7. INSTALLED NEW FLOORBEAM AT BS 1681, LBL 58-RBL 58, IAW SRM 51-40-02. MAJOR REPAIR.
Part: FLOORBEAM — GOUGED (BS 365) · airframe 59,116 hrs · 20,705 cycles
FLOORBEAM UPPER CHORD STIFFENER AT STA 365 BETWEEN BL 0 AND RBL 60 HAS GOUGES AND CORROSION. REMOVED DAMAGE IAW SRM 53-00-51, FIG 101, DETAIL 3; ORIGINAL MATERIAL -.090", AFTER REWORK -.038", LOSS - .012", MORE THAN 10 PERCENT ALLOWABLE, OUT OF LIMITS IAW SRM 53-00-51, FIG 101, DETAIL 3. FABRICATED NEW FLOORBEAM UPPER CHORD, USING BAC 1505-100880/12, BATCH 1895840, IAW SRM 53-00-51, REPAIR NR3. REPAIR STRAPS FABBED ON TRAVELERS, T10/862191 AND T10/862192. INSTALLED NEW FLOORBEAM UPPER CHORD REPAIR IAW SRM 51-40-02 AND SRM 53-00-51, REPAIR NR3, AT BS 365, BL0 - RBL 60. (L=1", W=2", D=.012"). MAJOR REPAIR.
Part: FLOORBEAM — CORRODED (BS 1661) · airframe 59,116 hrs · 20,705 cycles
BS 1661 FLOORBEAM UPPER SURFACE CORRODED AT RBL 58. REMOVED CORROSION AT BS 1661, RBL 58, PER SRM 51-10-01. CHECKED LIMITS; ORIGINAL MATERIAL - .125", AFTER REWORK - .110"; L=12", W=2", D=.015", FOUND TO BE OUT OF LIMITS PER SRM 53-00-51, FIG.101, DETAIL 3. REMOVED AND REPLACED FLOORBEAM AT BS 1661, FABRICATED FROM BAC 1518-338, BATCH 1918947, PER SRM 53-60-51, FIG.1, PAGE 5 AND DWG 146N5090. INSTALLED NEW FLOORBEAM PER SRM 53-60-51 AND DWG 146N5090, AT BS 1661. MAJOR REPAIR
Part: SEAT TRACK — CORRODED (BS 418-440) · corrosion level 2 · airframe 59,116 hrs · 20,705 cycles
MDC RT SEAT TRACK AT RBL 45.5, FROM BS 418-440, HAS SEVERAL NICKS, GOUGES, AND CORROSION. REMOVED CORROSION IAW SRM 51-10-02. AFTER REMOVAL OF NICKS, GOUGES, AND CORROSION, FOUND OUT OF LIMITS IAW SRM 53-00-52, FIG 101, DETAIL 7; ORIGINAL MATERIAL; .070", AFTER REWORK; .051", EXCEEDS 20 PERCENT, ALLOWED, L=2", W=2". FABBED NEW SEAT TRACK FROM BS 418-440, RBL 45.5, IAW MATERIAL BAC 1520-792, BATCH NR 1904663, IAW SRM 51-10-01. TREATED/PRIMED. INSTALLED NEW SEAT TRACK FROM BS 418-440, RBL 45.5, IAW SRM 51-40-02. MAJOR REPAIR.
Part: SEAT TRACK — CORRODED (BS 418-440) · corrosion level 2 · airframe 59,116 hrs · 20,705 cycles
RT SEAT TRACK AT RBL 24.75, BS 418-440, HAS SEVERAL NICKS, GOUGES, AND CORROSION. REMOVED CORROSION IAW SRM 51-10-02; AFTER REMOVAL OF NICKS, GOUGES, AND CORROSION, FOUND OUT OF LIMITS IAW SRM 53-00-52, FIG 101, DETAIL 7; ORIGINAL MATERIAL; .070", AFTER REWORK; .050", EXCEEDS 20 PERCENT ALLOWED, L=1.5", W=1". FABBED NEW SEAT TRACK FROM BS 418-440, RBL 24.75, MATERIAL BAC 1520-792, BATCH NR 1904663, IAW SRM 51-10-01. TREATED/PRIMED. INSTALLED NEW SEAT TRACK IAW SRM 51-40-02, AT BS 418-440, RBL 24.75. MAJOR REPAIR.
Part: FLOORBEAM — CORRODED (BS 1640) · airframe 59,116 hrs · 20,705 cycles
FLOORBEAM UPPER CHORD AT BS 1640 HAS CORROSION APPROX LBL30-RBL35.
Part: FLOORBEAM — CORRODED (BS 1640) · corrosion level 2 · airframe 59,116 hrs · 20,705 cycles
FLOORBEAM UPPER CHORD AT STA 1640 NEAR LT SIDEWALL HAS CORROSION. REMOVED CORROSION ON FLOORBEAM IAW SRM 51-10-02,ORIG MATERIAL 0.125" AFTER REWORKED 0.015" AT LBL 60, MEASURED AREA,L= 3.7", X W=2.00", X DEPTH=0.110" FOUNDED OUT LIMITS IAW SRM 53-00-51, FIG 101, DETAIL III, REMOVAL FLOORBEAM STA 1640 BETWEEN LBL 70 TO RBL 70 IAW SRM 51-40-02, INSTALLED NEW FLOORBEAM FABRICATED FROM MAT BAC 1518-338, BATCH 1918947, IAW DWG 146N5089 AND SRM 53-60-51, FIG 1, PAG 5 (SHEET 5 & 6 AND 6 OF 7) MAJOR REPAIR.