The aircraft experienced repeated skipping of the MGB burn chip detector. During maintenance on September 22nd, the chip appeared clean but the issue returned on a subsequent flight. Examination of the chip on September 27th found an abnormal fragment, leading to grounding of the aircraft. The MGB and related components were removed for investigation and repair while the aircraft was placed in storage.

1. MGB BURN CHIP EVENT

2. AIRCRAFT: PT-SDA
MANUFACTURER: AGUSTA WESTLAND
MODEL: A109E
SERIAL NUMBER: 11764
YEAR: 2009
TSN: 964,1
OWNER: VATTNE RJ ADM E
PARTICIPAÇÕES LTDA
OPERATOR: VATTNE RJ ADM E
PARTICIPAÇÕES LTDA

3. FLIGHTS PERFORMED
• 1º 03/09/2021 FROM SBQY TO SBMT
• 2º 03/09/2021 FROM SBMT TO SBSP
• 3º 03/09/2021 FROM SBSP TO SJCG
• 4º 03/09/2021 FROM SJCG TO SDAG
• 5º 03/09/2021 FROM SDAG TO SBJR
• 6º 04/09/2021 FROM SBJR TO SDRJ
• 7º 04/09/2021 FROM SDRJ TO SNFD
• 8º 04/09/2021 FROM SNFD TO SBJR
• 9º 07/09/2021 FROM SBJR TO SJCG
• 10º 07/09/2021 FROM SJCG TO SDSP
• 11º 07/09/2021 FROM SDSP TO ZZZZ ( MARINA SAMAR )
• 12º 07/09/2021 FROM ZZZZ TO SBSP
• 13º 07/09/2021 FROM SBSP TO SNFD
• 14º 07/09/2021 FROM SNFD TO SDRJ
• 15º 07/09/2021 FROM SDRJ TO SBJR
• 16º 23/09/2021 FROM SBJR TO SDRJ
• 17º 23/09/2021 FROM SDRJ TO SIVB
• 18º 27/09/2021 FROM SIVB TO SBPR
• 19º 27/09/2021 FROM SBPR TO SIVB
• 20º 27/09/2021 FROM SIVB TO SPRJ
• 21º 27/09/2021 FROM SPRJ TO SBJR ( AOG AND MAINTENANCE )

4. STATUS REPORT
• During the maintenance departure at the company Leonardo do
Brasil on 03/SEP/2021, it was reported that the burn chip break was
skipped, it was reactivated and we continued with the maintenance
tests.
• After the flight on 07/SEP/2021, cmte reported that the problem
occurred again, the technician checked the chips and noticed a sludge
on the top chip, without any particles.the burn chip break was
restarted again and the operation continued.
• On 27/SEP/2021 it happened again and during the inspection of the
chips, the particle found only on the upper chip was noticed, which
resulted in the aircraft stopping so far.

5. During the return to Rio de Janeiro at the Angra dos reis beams, he again had the
same problem of skipping the SWICHT of the CTP CHIP BRUN again, upon receipt of
the PR SDA machine he reported to me and I rearmed and we were monitoring, the
next day the procedure made the removal of the CHIP and identified that there was
an oil sludge similar to a gel I thought it was normal.
I communicated to Cmte Ricardo that we had to turn the machine to do a test
because we had a suspicion of filings in the CTP on the CHIP of the mast, this on the
date of 22/SEP/2021, we continued with this procedure and took the opportunity to
do a compressor wash and during the rotation it did not present the problem and I
looked at the chip again and it remained clean, I released the machine to return to
service.
During the return of the flight from BH, I was informed by the crew that the SWICHT
had jumped again, but no identification appeared on the EDU, we went back to the
runway and we didn't have good news, the CHIP had a strange fragment that was not
metallic and we interrupted the flight that was destined for SP, I contacted the
workshop.

6. MAINTENACE RESULTS
• AIRCRAFT ON GROUND
• OIL ANALYSIS BY JETCARE ( ATTACHED )
• POWER MODULE P/N: E1070-2 INOP

7. LAST MAINTENANCE
• 05/08/2021 - LEONARDO DO BRASIL
ORÇAMENTO 2100022392 - PT-SDA (E-MAL DE 12/06/2021)
CVA
INSPEÇÃO EXTENDIDA 200 HORAS – CÉLULA
INSPEÇÃO ESPECIAL DE 50 H DOS TIP CAPS
INSPEÇÃO OPC 200 HORAS – ROTOR BRAKE
LUBRIFICAÇÃO DE 50 HORAS 03 MESES – CÉLULA
LUBRIFICAÇÃO DE 300 HORAS – CÉLULA
INSPEÇÃO DE 12 MESES DOS ICA´S – MODIFICAÇÕES
INSPEÇÃO DE 100 HORAS DOS MRH ELASTOMERIC BEARINGS
INSP ESPECIAL DE 100 H DE CÉLULA - BALANCEAMENTO DO RC
INSP DE EQUIP OPC 100 H DO AR CONDICIONADO -
INSPEÇÃO DE 200 HORAS DOS TRH ELASTOMERIC BEARINGS
INSPEÇÃO ESPECIAL DE 50 HORAS (LCF)
INSPEÇÃO DE 200 HORAS DOS MOTORES
INSPEÇÃO DE 900 HORAS DOS MOTORES ( JÁ TEMOS O ORÇAMENTO DA
PWC PARA OS BICOS )
TROCA DO PISO DO BAGAGEIRO ORÇAMENTO EM ANEXO ( CASO PRECISE
ATUALIZAR )
ORÇAMENTO 2100022962 - PT-SDA (E-MAIL DE 27/07/2021)
Flaking dos rolamentos do damper checar ( cotar todos )
- Checar brackets dos dampers ( Flaking + bolts )
- Folga dos rolamentos de links ( cotar todos )
- Flushing dos dampers
- Eliminar folga da tesoura rotativa e inspecionar buchas
- Traquéia do ar cond
- Sensor de temperatura
- Substituir parafuso dos MR links
- Corrosão do deck do extintor dos motores + pintura
- Fricção do coletivo ajustar
- Refazer a selagem do plex LH e RH ( Borda externa somente )
- Bushing do trunnion do rotor de cauda
- Checar a altura dos MLG ( reportado desigualdade )
- Repintura do tip cap do MRBlades
- Selagem do lap plate das MRBlades
- Substituir Fita PU da MRBlade SN Q1136
- Substituir Bumper do TRH
- Substituir Boot do disco de balanceamento
- Substituir Bucha da tesoura do pitch change do TR
- Avaliar coxim dos escapes
- Checar vazamento hidráulico na região do console central ( antena DME )
- Verificar bucha / Batente de porta aberta dos PAX
- Colar nylatron do TRTR
- Substituir fitas antiatrito da estrutura
- Pesquisa de pane do SAS e Flight Diretor ( HDG e NAV funcionam e ALT e VS
não funcionam, atraso no comando Pitch )

8. REPORTS
• WO PRIME TAXI AIR Nº 029/2021 ( 27/SEP/2021 )
• WO ULTRA-REV Nº 12489 ( 27/SEP/2021 )
• JETCARE REPORT Nº SEMUS5568 ( 08/OCT/2021 )

9. ACTIONS TO PERFORM
• MGB REMOVAL FOR INVESTIGATION AND REPAIR
• ENGINE STORAGE
• MGB STORAGE
• TGB STORAGE
• AIRCRAFT STORAGE

10. TECHNICAL REFERENCES
• MAINTENANCE MANUAL AW MM REV.14 15/09/2021
• MAINTENANCE MANUAL AW MM REV.14 MM 31-52

11. POWER MODULE P/N: E1070-2

12. DECISION TABLE

15. OIL FILTER AND PARTICULES

16. MGB CHIP DETECTOR
07/SEP/2021 22/SEP/2021 27/SEP/2021