SERVICE LETTER 233
Cessna 170 · Maintenance Manual
Overview
This document is a service letter from Textron Aviation regarding the hydraulic pump replacement for Cessna 170 aircraft equipped with 2100A floats. It provides detailed instructions for compliance, including parts required, approximate shop hours, and warranty information. The service letter is intended for maintenance personnel and aircraft technicians who are responsible for the upkeep of Cessna 170 models. It outlines the necessary steps to replace the hydraulic pump, ensuring that the aircraft remains compliant with safety and operational standards.
- The document is a service letter for Cessna 170A and 170B models.
- It details the replacement of the hydraulic pump on 2100A floats.
- Approximate labor time for the replacement is 8 hours.
- The service kit includes part number 1011887, a new hydraulic pump.
- Weight and balance changes must be documented after the replacement.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at www.wipaire.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Maintenance Manual
- Year ·
- 2021
- Pages ·
- 4
- File size ·
- 733 KB
- Copy found at ·
- www.wipaire.com
What is the SERVICE LETTER 233?
The SERVICE LETTER 233 is a maintenance manual for the Cessna 170, dated 2021.
How many pages is the SERVICE LETTER 233?
The copy of the SERVICE LETTER 233 on file runs 4 pages.
What year was the SERVICE LETTER 233 published?
The SERVICE LETTER 233 — the Cessna 170 maintenance manual on file — is dated 2021.
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- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
Compliance Method
The service letter outlines an optional compliance method for replacing the hydraulic pump on Cessna 170 aircraft. It specifies that installation should follow the work instructions provided in the service letter.
Approximate Shop Hours
The estimated labor time for completing the hydraulic pump replacement is approximately 8 labor hours, which should be considered when scheduling maintenance.
Items Provided in Service Kit
The service kit for the hydraulic pump replacement includes several items, such as part number 1011887, which is a new hydraulic pump, and other necessary components for the installation.
Weight and Balance Change
Replacing the hydraulic pump may result in a change to the aircraft's weight and balance, which should be documented accordingly.
Warranty Information
The service letter specifies that it does not include warranty coverage for labor and parts related to the hydraulic pump replacement.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Safety notes
- Ensure compliance with the installation instructions to maintain aircraft safety standards.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Full document text
WIPLINE FLOATS • SKIS • MODIFICATIONS • AIRCRAFT SALES AVIONICS • INTERIOR • MAINTENANCE • PAINT REFINISHING 1700 Henry Ave - Fleming Field (KSGS), South St. Paul, MN 55075 Phone: 651.451.1205 | Fax: 651.457.7858 www.wipaire.com SERVICE LETTER 233 Cessna 170 Hydraulic Pump Replacement on 2100A Floats Aircraft Makes/Model(s): Float Model(s): Compliance: Optional By: MAB Textron Aviation 170A & 170B 2100A Part Number: 1011890 Approved: SDW Date: 6/10/2021 Revision: A )$$DSSURYDOKDVEHHQREWDLQHGIRUWHFKQLFDOGDWDLQWKLVSXEOLFDWLRQWKDWDႇHFWV67&RU762GHVLJQFRPSOLDQFH LOG OF REVISIONS Revision Description Date A Initial release 6/10/2021 EFFECTIVITY: 7KLVVHUYLFHOHWWHUDSSOLHVWR7H[WURQ$YLDWLRQPRGHOV$DQG%ZLWK:LSOLQH$PSKLELDQ)ORDWVLQVWDOOHGSHU67& 6$&+ COMPLIANCE: 2SWLRQDOFRPSOLDQFH BACKGROUND: 7H[WURQ$YLDWLRQ &HVVQD $DQG%+\GUDXOLF3XPS$VVHPEO\$ KDVEHHQGLVFRQWLQXHG7KLVVHUYLFH OHWWHUSURYLGHVWKHRSWLRQWRUHSODFHLWZLWKSXPS COMPLIANCE METHOD: ,QVWDOOSURYLGHGSDUWVDVVKRZQLQWKH:RUN,QVWUXFWLRQVHFWLRQRIWKLVVHUYLFHOHWWHU APPROXIMATE SHOP HOURS: 7KHZRUNLQVWUXFWLRQIRUWKLVVHUYLFHOHWWHUZLOOWDNHDSSUR[LPDWHO\ODERUKRXUV WEIGHT AND BALANCE CHANGE: /%6)6 WARRANTY INFORMATION: 7KLVVHUYLFHOHWWHUGRHVQRWLQFOXGHZDUUDQW\IRUODERUDQGSDUWV TECHNICAL DATA: &RSLHVRIWKLVVHUYLFHOHWWHUDVVRFLDWHGVHUYLFHNLW LIDSSOLFDEOH ÀRDWVHUYLFHPDQXDODQGÀRDWSDUWVPDQXDODUHDYDLODEOHDW ZZZZLSDLUHFRP 5HYLVLRQ$ 3DJHRI 31 6(59,&(/(77(5 &HVVQD+\GUDXOLF3XPS5HSODFHPHQWRQ$)ORDWV ITEMS PROVIDED IN SERVICE KIT 1011890 ITEM QTY PART NUMBER DESCRIPTION 1 1 1011887 $66(0%/<+<'5$8/,&32:(53$&.9 2 $1$ %2/7 *5,381'5,//('67((/ 1$6 )3 :$6+(5,'7+.67((/ 4 2 $1$ %2/7*5,381'5,//('67((/ 2 1$6 )3 :$6+(5,'7+.67((/ DISCONTINUED 12 VDC HYDRAULIC PUMP 21A09000-279 NEW 12 VDC HYDRAULIC PUMP 1011887 5HYLVLRQ$ 3DJHRI 31 6(59,&(/(77(5 &HVVQD+\GUDXOLF3XPS5HSODFHPHQWRQ$)ORDWV 5HYLVLRQ$ 3DJHRI 31 6(59,&(/(77(5 &HVVQD+\GUDXOLF3XPS5HSODFHPHQWRQ$)ORDWV Work Instructions 'LVFRQQHFWDLUFUDIWEDWWHU\ 'LVFRQQHFWVLQJOHSLQ0ROH[FRQQHFWRUIRU*$ZLUH 'LVFRQQHFWSLQ&3&FRQQHFWRUIURPK\GUDXOLFSRZHUSDFNDVVHPEO\$ ,IDLUFUDIWKDVDK\GUDXOLFORZOHYHOZDUQLQJV\VWHPGLVFRQQHFWZLUHKDUQHVVIURPVHQVRULQUHVHUYRLU 'UDLQK\GUDXOLFÀXLGIURPK\GUDXOLFSRZHUSDFNUHVHUYRLU 'LVFRQQHFWDQGFDS$ K\GUDXOLFOLQHIURPUHVHUYRLUWRKDQGSXPS 'LVFRQQHFWDQGFDS$ K\GUDXOLFOLQHVIURPSXPSXSDQGGQSRUWVWRFURVV¿WWLQJV 8QEROWDQGUHPRYHK\GUDXOLFSRZHUSDFN$ IURPPRXQWLQJDVVHPEO\ ,QVWDOOQHZK\GUDXOLFSRZHUSDFNXVLQJVXSSOLHGKDUGZDUH 5HLQVWDOOK\GUDXOLFOLQHV$ RQWRSXPSPDQLIROGXSDQGGQSRUWV 5HLQVWDOOK\GUDXOLFOLQH$ WRSXPSUHVHUYRLU¿WWLQJ ,IDLUFUDIWKDVDK\GUDXOLFORZOHYHOZDUQLQJV\VWHPUHFRQQHFWZLUHKDUQHVVWRVHQVRULQQHZUHVHUYRLU 5HLQVWDOOSLQ&3&FRQQHFWRU6HHHOHFWULFDOVFKHPDWLF &XWVLQJOHSLQ0ROH[FRQQHFWRUIURP*$ZLUH,QVWDOO)1/FRQQHFWRURQWR*$ZLUH&RQQHFW*$ZLUHWR SRZHUZLUHRQK\GUDXOLFSRZHUSDFNDVVHPEO\6HHHOHFWULFDOVFKHPDWLF 5HFRQQHFWDLUFUDIWEDWWHU\VHUYLFHSXPSUHVHUYRLUZLWK0,/+K\GUDXOLFÀXLGDQGSHUIRUPDUHWUDFWLRQH[WHQVLRQWHVW WRPDNHVXUHV\VWHPLVIXQFWLRQLQJFRUUHFWO\:DWFKWKHV\VWHPIRUOHDNVDQGDGG0,/+K\GUDXOLFÀXLGDVQHHGHG Aircraft Closing & Return to Service 8SRQFRPSOHWLRQRILQVSHFWLRQHQWHULQIRUPDWLRQLQ$LUFUDIW/RJERRNIRUFRPSOHWLRQRI:LSDLUH6HUYLFH/HWWHU